The Ku Klux Klan was created after Abraham Lincoln had claimed slavery was no longer legal. The KKK went around, killing black people and such. They also protested around the segregation process. They are still around to this day, but I don't believe that are killing anymore.
A major reason why the Soviet Union did actually create satellite states following World War II in Eastern Europe was because they wanted to create a buffer zone against future invasions (2).
The correct answer therefore is 2.
They did this because they actually thought that war with the West was possible. For that reason, having buffer states between themselves and between a possible Western invasion, would help them in their cause.
Most of the Latin American revolutionaries came from the relatively "lower" classes, since much of what they were protesting against had to do with social and class inequality.