An angry mob protest against the Stamp Act by carrying a banner reading 'The Folly of England, the Ruin of America' through the streets of New York. ... While the Congress and the colonial assemblies passed resolutions and issued petitions against the Stamp Act, the colonists took matters into their own hands.
Germany treated the Jews horribly and it would have been completely unjust for them to not have done something to at least try and make things right after that.
Search-and-destroy missions in Vietnam were largely unsuccessful. This is because new and larger reinforcements of Viet-Kongs moved in as soon as American forces departed. As such, these missions did not stem the flow of refugees.