I was there and I protested all over for years. DC, Boston, Philly. I protested against the war. It was illegal. One by one men disappeared to not return or return in a basket. I was not going to be one of them. I was raised in a very religious family that was abusive. One did not break the rules of god's law and thou shall not kill happens to be one. So I would run to Canada, go to jail or hide.
So it was easy to protest. We could get a crowd together quickly to strike. It was a fight in the street because the police were not militerized. Later they got their stuff together and learned how to dominate on the street.
I also protested for civil rights and for our environment. It is hard to be asked by your country to go half way around the world to kill someone you did not know existed while people in your own country are not equal. Gee I have not seen a black lives matter news story since the election. What happened to coverage of the pipelines? Errrrrrrrrrr