New Central American guerrillas and paramilitaries?

Is anybody worried about the emergence of these groups?

We have the “Patrulla 1856” and “Frente Patriotico para la Defensa Nacional” militias in Costa Rica.

Then there is the emergence of armed groups in Nicaragua which isn't entirely new - we've already seen Recompas  and Recontras. However, last week's shootout involving an armed group and the police which led to the deaths of ten people seems to have escalated the seriousness of the situation.

Last year we had news on the emergence of a new guerrilla group in El Salvador.

Just throwing the question out there.