I think that activism not political is the keyword. As a current college student, within most of the conversations that I have had with other students, they seem to be heavily opinionated and "passionate" about politics and their ideals but lack any real knowledge over the topics or positions they discuss. In a half hour drunken conversation, you could turn a "hardcore democrat" into someone who believes they are actually more libertarian leaning (which I do believe most inherently gravitate towards when questioned over their positions).
Nowadays (even thought I have no clue what it was like in the past), the youth support politics as a fashion statement rather than a representation of their ideals. They seem to fall in line with the parties and mindlessly support the policy that they believe they should. Their knowledge of politics only goes to the extent of what there five minute glance on the news says it should be, which is quite saddening. I am not stereotyping, but the trend I see most is that individuals fall in line with what ever there social groups expected political stance would be, the "frat-boy" types all tend to support republicans because they support the troops and are against gay marriage, the "socially conscious intellectual" student strongly supports democratic principals (or what ever the author of the book they are reading at the time supports) and so on and so forth. Politics for many at the college level seems to just be an extension of their fashion or lifestyle, or simply what they think they should support because of the image they portray.
The truth is very few actually give a shit and will continue to not care until there cushy lifestyle is taken away or they are oppressed in some way or another. Most likely at that point it will be too late. I know I come off as a cynic but sometimes it is just too easy in this world.