What regions features a Marxist terrorist group?

For the most part terrorists groups are based on religion and nationalism. The changes in the world that have marginalized Marxism, have reduced the threat of political terrorists. As an aside, before drug lords and their gangs began to use force with regards to their drug trading in Mexico, and to dominate legal authorities, the Mexican government spent a good deal of time hunting down isolated Marxists groups. This information was provided by reporters of the Monterrey newspaper, El Norte.