It is also alleged that, during the time they first lost the presidency, some of the most powerful PRI members were supporting and protecting drug cartels that they used as death squads against their criminal and political rivals, being this one of the real reasons the PAN party government accepted to start the Mexican drug war against the Cartels. However, it is also alleged that during this period of time the turmoil of war has been used by the parties in power to exterminate even more political dissidents, activists and their own rivals. An example of this is the case of the 2014 forced disappearance and assassination of 43 activist rural students from the Ayotzinapa Teachers' College, in the hands of police officers colluded with the "Guerreros Unidos" drug cartel. six years later in 2020, it was confirmed that members from the Mexican Army base in town had worked with police and gang members to kidnap the students. The Sinaloa Cartel has been known for having enforcer death squads like Gente Nueva, Los Ántrax, and enforcers forming their own death squads. From 2009 to 2012,the Jalisco New Generation Cartel under the name Los Matazetas did massacres in the states of Veracruz and Tamaulipas with their intention to remove the rival Los Zetas Cartel. One example was the Boca del Rio massacre in 2011, were 35 corpses were found under a bridge in trucks covered with paper bags. Gente Nueva was accused of collaborating with the organization.