Most collegiate-age youngsters suffer from a slew of defects which makes them susceptible to this form of recruitment:
1. The tendency to regard as the best idea they ever heard, the LAST idea they ever heard.
2. Lack of experience in how life really works; they have not had much real responsibility (no mortgage, no kids to feed), they have yet to be disappointed by anything particularly important (like not getting a certain job, or perhaps finding out that you can't afford your dream house) and such.
3. Since many are away from home for the first time, the more shocking, the more seemingly-forbidden and taboo, the better. They gravitate towards that which titilates them.
4. In similar fashion, because they have no practical experience and because they are typically away from home for the first time (and thus guidance), they tend blindly stumble from one mistake to another. Knowledge comes hard,sometimes.
5. They are very much susceptible to being made to look dumb by their more-experienced professors and upperclassmen, who have managed to swap the appearance of learning for the actual thing. Since no one wants to be thought stupid, it's sometimes better to just join up and appear smart.
6. They have not learned the lesson that most forms of "progressive" politics are movements of the "well-intentioned but ill-informed" being led by the "well-informed but ill-intentioned".
7. While children require the opportunity to express their independance at the first opportunity, nowhere was it engraved in stone that they would always do so wisely.
8. Children away form home and placed in a new and often chaotic aand confusing atmosphere are the most susceptible to brainwashing.
9. What better place to practice covert psychiatry than on a college campus with all it's moldable minds? You will find an awful lot of psychiatrists involved in these campus movements. Your children are being manipulated by professionals.
10. There has been a tendency in America in the last 20-30 years to cease teaching things like history, civics, logic and oratory and debate. These courses have been replaced with things like "gender studies", "tolerance" and other multi-cultural subjects which advance grievances (real and perceived) in place of scholarship, and implant ideas within young minds. Ideas against which their young minds have been disarmed, not having the shields of history, civics, logic and debate to help separate the wheat from the chaff.
and this is why its not a bad idea to let the little buggers go to college for the first 2 years at a local community college, learn alittle about real life before they go off the university.