I don't know that my mother ever went to a protest--she had two brothers in the Navy during Vietnam and conservative parents, and I'm sure there would have been an uproar. Her brothers and father were pro-war. Her mother was less pro-war than trusting; she didn't want to see young men die but was convinced that the government wouldn't drag us into something that wasn't just (which was probably the public mindset that let it drag on for so long). I know Mom tried to convince her otherwise but it didn't happen.

Dad had become a pacifist of his own volition (his family leaned left and anti-war but were not dead set against it; one of my uncles joined the Navy as an act of rebellion) during college. He went into the Army after college but his training in geology meant that he spent the time in Hawaii analyzing aerial photographs.

They've both protested every war since then.