Respectfully, this applies to irl spaces too.

If you are objectively correct, you can’t live in constant fear that somebody might think you’re wrong. Beating around the bush and appeasement IS doing harm. Of course you don’t have to be rude, and I know you understand that this is obviously a very sensitive issue, but when push comes to shove it’s important to make your stance clear.
Be kind, be compassionate, be understanding, and make it clear that you stand on the objectively right side of the issues. In real life spaces, as long as liberals know you disagree with conservatives from the very beginning, they are far more likely to listen to what you have to say. Most people are not the online frothing-at-the-mouth liberals we talk so much about