Hampshire
Social justice (or more specifically, “Power, Community, and Social Justice”) is in the distribution requirements. Students are very activist. My son (freshman, who is not really interested in politics) says it is almost too much for him 
Edited to add: you will not see a prepster-looking student anywhere on campus. I am sure there are plenty of student who smoke (BTW they smoke at Yale too); my son lives on a substance free hall with a great group of kids who don’t.