I'm trying to figure out if there were any violent revolutions in the late 20th century? So far the only thing I can find close to such an event would be the Guatemalan Civil War. Of course, there's also the Vietnam War, but i'm looking for the more obscure ones, and sort of constricted to a specific region. In particular, any violent revolutions in eastern European and western Asian countries are what i'm specifically looking for, but if there's any other notable revolutions that i'm not aware of, i'd love to learn.
How violent do you want 'em? There's a bunch of interesting or lesser known revolutions or failed revolutions in the Middle East, many of which involved some degree of violence.
Beyond that I think you'd be looking at a lot of much smaller and arguably less successful examples, or ones where the subtlety between a coup, a revolution and civil conflict starts to get lost. The various conflicts in Yemen following the Yemeni Civil War for example. Or the failed uprisings against Saddam in Iraq in 1991.