All of the aforementioned events deal with student disapproval of the <em>Vietnam War </em><em />.
The Berkley demonstrations during the 1960's was focused on using massive support from American citizens in order to end the war in Vietnam. These citizens felt that if they could get enough citizens to march and protest against this war, the US Congress would feel pressured to end the war immediately.
The 1968 riots at the Democratic National Convention was when thousands of anti-war protestors clashed with police forces.Inside the convention, the Democratic party was constantly arguing over whether or not they should support the removal of US troops from Vietnam.
The Kent State protests also dealt with American actions in Vietnam. These students specifically were protesting against America invading Cambodia during the Vietnam War.
