I tend to think along the lines of "Evil will only triumph when good men do nothing."

At that age, I was a lot less engaging than I am now. Had I taken a course with a vocal prof at that age, I probably would have just fumed too, but now about 7 years later I'd be willing to challenge the professor. By challenge, I mean present reasonable counterarguments, not "You're a stupid moron Professor Knowitall."

Nobody wants to be the first. I'm sure that there are more in that classroom that agree with a conservative point of view, but when noone else speaks up they think that they must be the only ones thinking it. If one person has the courage to speak up, this'll encourage more discussion and facilitate learning.

I would say that documenting everything is a good start. If you think you're in jeopardy of losing grades, keep before and after, document what you say/when/how, and if need be present your argument to the appropriate levels.

If we don't speak out now, then this just emboldens the other side to make even further claims, and make laws like the ones that went into effect yesterday. But if we speak out, this may help bring more to our side and prevent stupidity from spreading (or at least spreading as quickly).