The EPR emerged as a Mexican guerrilla group in the mid-1990s. The killing of 17 peasant activists in Guerrero state in Coyuca de Benitez in June of 1995 – an event captured on film – provided the impetus for the creation of EPR. Fourteen separate guerrilla groups banded together under the leadership of Commandante Jose Arturo to form the EPR. The newly formed group began attacking police forces in several states in the summer of 1996.
The united EPR aimed to combat what it saw as domination by Mexico’s wealthy and “foreign capital” interests in the country. A Partido Democratico Popular Revolucionario (PDPR), or the Democratic Popular Revolutionary Party, served as a political arm for the EPR and published the guerrilla group’s pronouncements.
In 1996, the EPR dispelled rumors that it was a government-created hoax or a front for another guerrilla group. In August, the EPR assaulted police forces in six different states, leaving 13 dead. The Mexican government responded by deploying two airborne battalions to Guerrero state and three military battalions to Oaxaca. Federal authorities arrested and jailed 85 suspected EPR collaborators.
The group’s support grew in 1997 and 1998, as a result of publicity campaigns, rallies and international press coverage. Government efforts to clamp down on EPR took a hit in 1998, when army forces engaged in a six-hour gunfight with several dozen residents at a local school in El Charco. Following the gun battle, it turned out that those involved had no connection to the EPR.
In the late 1990s, the EPR began to splinter into several groups and subgroups. This divisiveness, more than government counterinsurgency operations, retarded EPR’s ability to conduct militant operations. Little was heard from the group in the early 2000s.
Successor organizations to the EPR continued sporadic, small-scale attacks in Mexico’s southern regions. Splinter groups included the Insurgent People’s Revolutionary Army, Revolutionary Armed Forces of the People (FARP) as well as other smaller groups. The ideologies of these successor organizations were quite consistent with that of the EPR.
EPR attacks surged in 2006 and 2007, perhaps in an attempt to take advantage of the contested presidential election. Bombings by the group in July of 2007 succeeded in damaging two major gas pipelines in Guanajuato state and near Queretaro. These attacks marked a significant boost in the group's capabilities.
Bombings in September 2007 damaged six more pipelines and prompted the evacuation of 15,000 people from nearby towns. The state-owned oil company, Pemex, was forced to shut down four pipelines and massively increase security around the remaining pipelines. Since these attacks, the EPR has been relatively quiet.