Comment by autoexec
It's still better to take a stand even when there is a risk of being wrong because there is always a risk of being wrong. Don't let fear of being wrong or not knowing everything (which is impossible) stop you from standing up for your beliefs. Instead, stand up for what you believe, but be open to having your mind changed. If new information comes to light which changes your position that's perfectly acceptable.
It's a lot easier to live with yourself when you act according to your best understanding of the situation than when you allow fear to paralyze you into inaction at a time when you should have done something.