The evolution of media in Mexican politics from the Revolutionary period through to 2000 represents a dynamic interplay of influence, power, and resistance, characterized by the way information disseminates, the rise of various media formats, and the tension between state control and emerging platforms for civil discourse and dissent. The role of print, radio, television, and later the internet has produced significant shifts in public opinion, government accountability, and the broader landscape of political participation.

Post-Revolutionary Mexico, after the tumultuous decade of the 1910s, witnessed the media's transformative potential as both a tool for governmental propaganda and a platform for grassroots communication. The Mexican Revolution (1910-1920)—whose narratives and ideologies were extensively covered by both domestic and international media—created a heightened awareness of social issues, vastly altering the political stage. Early journalism sought to organize the public discourse surrounding national identity, social justice, and political autonomy. The press emerged as a crucial mechanism through which revolutionary ideals were cultivated, dissent was framed, and the heroes of the movement were celebrated.

The establishment of the new Mexican government with the Constitution of 1917 brought about unprecedented efforts to control media narratives. The government's early attempts to shape public opinion relied heavily on state-controlled pamphlets and newspapers that emphasized the legitimacy of revolutionary promises such as land reform and social rights. This emphasis laid the groundwork for a relationship between media and state where the latter wielded significant influence over how political ideologies were propagated and perceived.

In the ensuing decades, as print media flourished amidst post-revolutionary unrest, the government faced an increasingly assertive press that sought not only to report but to critique. The establishment of the National Revolutionary Party (PNR) in 1929, later rebranded as the Institutional Revolutionary Party (PRI), signified a critical pivot in media politics, adopting practices that enhanced its grip on public messaging while suppressing dissent. From this point onward, the PRI utilized the press and radio as pivotal means to construct a narrative of political stability, portraying a sense of unity and progress despite the actual social fragmentation occurring within Mexican society.

During the mid-20th century, especially under President Lazaro Cárdenas in the 1930s, the Mexican government underwent a radical transformation concerning media engagement. Cárdenas recognized the potency of the media in shaping Mexican identity and dished out a series of reforms that sparked the rise of radio broadcasting. This innovative medium became a primary vector for state communication, linking rural and urban audiences to the national narrative. Cárdenas’s government utilized radio to resonate with the populace, creating dynamic and accessible content that aligned with revolutionary ethos while promoting a sense of cohesion and loyalty to the state.

However, while radio flourished as a means of unifying the Mexican populace, it also laid bare underlying tensions between the state and emergent opposition. By the late 1930s and into the 1940s, figures outside the established political narratives began to harness the radio's power, offering alternative viewpoints and critiques. This diversification of voices—amidst government efforts to control broadcasting—foreshadowed an inevitable fracturing of the previously cohesive media landscape.

The post-World War II era saw the media landscape in Mexico transforming once again with the explosion of mass media outlets. The introduction of television in the 1950s compounded the effects of earlier media forms, as political messages could now reach a wider audience through visual imagery and narrative storytelling. The government established the Mexican Institute of Television in 1959, further positioning the state as gatekeepers of media content. As political advertisements became the norm, the PRI’s dominance was reinforced, projecting an image of unbroken authority against a backdrop of scripted and controlled narratives.

Despite the PRI's continued stronghold, the 1960s gave rise to a counter-culture and social movements that increasingly voiced opposing sentiments against government policies. Events such as the Tlatelolco massacre in 1968, where the government brutally suppressed student protests, starkly demonstrated the limits of media control. Post-massacre, independent and foreign journalists played an instrumental role in exposing state violence. This inconsistency highlighted a key development—the emergence of investigative journalism fostered by both Mexican and expatriate journalists who risked their lives to uncover the darker realities of state repression.

The media’s role began to strain under the tension of government control and a burgeoning demand for freedom of expression. The evolution of print and visual media inspired new platforms for opposition, leading to the rise of alternative, independent newspapers and radio stations in the face of PRI censorship. As the government attempted to police dissenting voices, the shadows of an authoritarian regime began retreating with the emergence of empowered civil society. Papers like ‘Excélsior’ became platforms for pivotal critiques, playing an essential role in documenting crimes and abuses of power.

By the 1980s, the political landscape of Mexico was fraying, and media practices were no longer confined to government narratives. Investigative journalism flourished further, leading to the exposure of corruption within the ruling party. Journalists such as José María Pérez Gay and Julio Scherer García became key figures in calling attention to political transgressions and abuses, providing a counter-narrative that underscored an evolving public sentiment toward accountability and democratic reform.

As the nation made its way into the late 1990s, neoliberal policies were reshaping Mexican society and transnational media was taking root. The internet began to play a critically transformative role in how citizens accessed information, a fundamental shift from traditional media practices. Dial-up internet introduced an alternative means of communication and mobilization, particularly among younger generations who were increasingly seeking alternative narratives about governance and international engagement. The advent of social media platforms, albeit in a nascent form, began to challenge the limitations imposed by mainstream media as a means of political expression.

The culmination of these efforts led to the historic elections of 1994, during which the Zapatista uprising showcased the impact of decentralized media in mobilizing grassroots support and disseminating information regarding indigenous rights and social justice issues. The turbulent political landscape underscored the importance of alternative media in penetrating the often-monopolized narratives propagated by the PRI. Television, widely seen as a government tool, struggled to maintain its monopoly over public discourse as the public increasingly turned to print and narrative-based communication networks to fulfill their information needs.

The judiciary’s ruling on the right to access information and the establishment of mechanisms to bolster transparency marked a new phase in Mexican media. In the 1990s, the electoral reforms initiated by President Carlos Salinas de Gortari began to dismantle some of the PRI’s major tools of media control, offering distinct opportunities for opposition parties. While traditional channels maintained a degree of influence, new newspapers and independent radio stations began to thrive, driven by the tides of democratization sweeping across the nation.

The new millennium arrived with promise as Mexico entered a phase of political pluralism where media would play a critical role in deepening democracy. However, it was also accompanied by burgeoning violence against journalist dissenters, as the backlash from those in power revealed the daunting challenges ahead for media independence. The intricate balance between freedom of the press and violence against journalists became a focal issue, reflecting persistent struggles in fulfilling the democratic promise heralded by the changes throughout the 20th century.

In conclusion, the role of media in Mexican politics from the Revolution to 2000 cannot be overstated. It has acted as a crucial vehicle for revolutionary ideals, government narratives, dissenting voices, and ultimately, democratization. Throughout these decades, journalists emerged as agents of change, navigating constant adaptations in response to shifting political realities. Drifting from propaganda tools to platforms for accountability, Mexican media reflected the tensions of the socio-political landscape and foreshadowed the challenges that persist in the ongoing quest for free expression and democracy. Whether through print, radio, television, or digital platforms, the evolution of media not only shaped the trajectory of Mexican political discourse but also played a pivotal role in molding the essence of the nation’s identity in the modern era.