Arbenz in Guatemala in the Eisenhower Administration
Aristide in Haiti in the late 80s
contras in Nicaragua in the 80s
Mexico in the 20s
Honduras right now
Allende in Chile in the 70s
Cuba in the 60s (Bay of Pigs)
These are the obvious ones off the top of my head. Things like the War on Drugs are fairly transparent excuses for deeper military/political involvement in Latin America as well.