It's interesting to see some people feel this way. I don't really filter my views in posts on the web compared to conversations with (not very close) friends. It does feel like that could very well come back and bite me, maybe I'll lose jobs over "supporting hacktivism" or whatever. I guess it's a risk I'm willing to take to share my ideals.
Yes, this depends on many factors, like how strongly you feel about the case, how controversial it is, if you have kids, mortgage and so on.
I'll never forget when many years ago my boss, by that time a CEO of some major publicly traded companies, called me to his office and kindly asked I moderate my Usenet activity on some niche group. It turned out he was a lurker there and foresaw certain things I said might cause problems - it turned out he was right. And that was a long time before the Twitter era.
