Woodstock took place at a time where the freedoms of women and blacks were something that needed to be fought for. The war in Vietnam, civil rights, women's rights, and gay rights; the festival came to represent more than just music, it suddenly stood for the entire 1960s protest movement.
Woodstock was an expression of a generational revolt, to quote the Rolling Stones - "It's the singer, not the song". The anti-establishment cultural phenomenon that reigned throughout the 1960s may have been expressed through song but those who believed in the message were the real driving force.
The Woodstock generation were all defined either by the Vietnam War itself or the anti-war movement. They were a generation surrounded with both government propaganda and anti-war rhetoric. Most of the music tapped into the resulting frustration. It expressed disgust for war, the government, and society’s frauds. There was a sense of weariness, yet a strong refusal to conform or take any part in it. They didn't know exactly what to do or where to go, but they knew there was a lot wrong with the way things were.