The Vietnam War was the prolonged struggle between nationalist forces attempting to unify the country of Vietnam under a communist government and the United States (with the aid of the South Vietnamese) attempting to prevent the spread of communism.
A clash of very different beliefs and ideology – capitalism versus communism – each held with almost religious conviction, formed the basis of an international power struggle with both sides vying for dominance, exploiting every opportunity for expansion anywhere in the world.
Historically, the "Civil Rights Movement" referred to efforts toward achieving true equality for African-Americans in all facets of society, but today the term "civil rights" is also used to describe the advancement of equality for all people regardless of race, sex, age, disability, national origin, religion, or certain other characteristics.
The protagonists try drugs in the parties and principally, when they're at the hippie party and then travel and then found a circus. They just try it but don't care the consequences.
The protagonists found a reason to dance and being happy, they're just enjoying the moment for just one second, instead of being depressive and more worried about the word, they decide in that scene to live the life and break just a little bit with the increasing tension.
Lucy's boyfriend die becouse he go to the war, and never come back alive. For that reason Lucy across the movie evolves, not just becouse her brother (but his the principal), the war break her heart and takes away the first love that she had.
"Freedom" its hard to define, and even more difficult to find it, but they must give his life for social control and die without and ethical or even real goal.
The movie show us how sex, drugs and rock n' roll are connected. Sex, they wanted a revolution of minds, freedom in all the essence of the world, and something with that importance like sex won't be the exception. The drugs let they forget just for a moment the violation of human rights, and let they find therselves in a better way, in a better mood. The Rock n' Roll just wanted to try something different, a new begining, a new world, and they now thats no better way to spread the people of that change, that music.The Beatles are the symbol, they're the sun and planets in that movie, but at the same time the themes too. It was a work of art, a union of dimensions.