As you can see, there are several proponents of both sides, each probably siding on what they think is more important.
What you need to realize though is that your situation is not unique just because 'your in collage'. That has nothing to do with the equation. What you are running up against here is a far more simple.
Personal safety vs. social morals.
Anyone who speaks out against a system, and takes personal resources, to do so has an inherent risk of losing both.
What you need to decide is weather or not you want to take that risk. You might lose your chance for education, you might not change anything, both of those might happen, or neither. Hell, you could accidentally trip tomorrow and crack your skull open on the pavement rendering the whole thing moot. There is risk inherent in everything that a person does, but your own judgment lets you weight those odds of loss vs. the odds of gain.
You're ultimately going to have to make a choice and not everything is going to be known, but that doesn't mean you have to be totally blind. You don't live in a vacuum, and you aren't a lemming. Find things out. Your afraid of failing classes? Look into your school policy, or even better, talk to some professors about this. Might get arrested? This is a protest, not a riot; if it's well prepared, lawful, and peaceful then there's no need to arrest anyone. Find out things, even those odds.
But what you ultimately have to do is decide what you think is more important. Would you be willing to sacrifice what you have for this cause? (and let me make this VERY clear: a cause is NOT only what it is fighting against)
Some things are undoubtedly worth fighting for; your beliefs are one such thing. How you want to fight for them though is the real question.