Most of the leadership of the Columbia strike in 1968 was young men like myself. That no longer appears to be the case — either at Columbia or the other university protests around the country.

In 1968 we made the mistake of answering the police violence with anger, fighting them and calling them pigs. We blurred the line between nonviolence (the occupation of buildings) and violence (our slogans and rhetoric), thereby undercutting our moral position.

The students protesting the slaughter in Gaza, with their diverse leadership are making no such mistakes. They are thoroughly nonviolent. There may be individuals or provocateurs who defy the strategy, but at least the protesters are trying to make their intention clear. In a little-reported Instagram post last week entitled “Columbia’s Gaza Student Protest Community Values,” they wrote “At universities across the nation our movement is united in valuing every human life” and “We firmly reject any form of hate or bigotry.” Setting up tents and praying for the souls of the dead, all the dead, is not violence.