If there's one thing I remember from my 20s, it's that my level of political engagement and trying to be educated on the major issues was rare, especially among men. Despite some progress, which I attribute mainly to Dump being exceptionally awful, I think it still is.
Of course, going to a STEM school probably had an impact on my experience as well. STEM tends to attract a more apolitical or libertarian sort of individual, since people who prefer to work with machines are naturally less sociable and less likely to consider the concerns and feelings of other humans. That's why we have to force engineers to take ethics classes. ;-)