behave or cause to behave in a wild and irrational way, typically because of the effects of extreme emotion or drugs.
Whilst all the answers given here are correct in some way, the correct one is still A, preventing a war in Vietnam. The 60s were a hippy era, the pacifist movement against wars. And since the war in Vietnam lasted for 20 years, it is obvious that that is the thing which colored their lives black and something they stood against the most.
Nationality would be the country a person was born in. Ethnicity would be their ethnic or racial background.
Example:
A person could be born in Canada and be Canadian but their ethnicity could be something like Chinese or African.
