Micro factors that induce violent confrontations amidst national reviv
al movements are identified. These factors include the nature of local
social structures, tipping phenomena, and fortuitous events that set
off action/reaction cycles. They are shown to be better explanations t
han reigning macro theories to account for the peaceful nationalist re
vival in Catalonia in contrast to the violent one in the Basque Countr
y. A robustness test for the micro factors succeeds in differentiating
levels of violence in the politics of separation from the Soviet Unio
n in the Ukraine and Georgia.