Sorry. The question was so absurd I assumed it was rhetorical.
World War II was never intended to be peaceful, seeing as how it was a war and all. So no, I don't think anyone would describe it as mostly peaceful. They may have said most areas were peaceful today, or that most people in the area were peaceful.
Protests are intended to be peaceful, more like the fans at a football game. That's why I thought my analogy was so much better than yours. When a protest turns violent or destructive, it ceases to be a protest and becomes a riot. 99% of the protestors over that period were peaceful protestors. 99% of the protests remained peaceful.
There were occasionally idiots who would use the cover of protests to riot.