4. You're not a politician, your participation in a system is not up for popular vote
I saw your posts in the thread in question; shallow, red-scare nonsense, I feel. However, if you are in the habit of tucking tail and running just because somebody feels as much, I don't have much to suggest to you. That said, I would still advise you to go back to that thread and tell the relative newbie that it's not their place to suggest what your place is, and you'll post wherever you damn well please. Following that, you might try to back up your points with more solid arguments that weren't cribbed from a speech by Senator McCarthy or some other professional redscarist, and you might not attract the aforementioned sentiments. Have you no sense of decency?
PS: the scary watchword of the present generation is "TERRORIST", not "COMMIE". The substitution is made somewhat effortlessly, as many of the same tactics and public relations campaigns used to justify government policy in a previous era are being recycled for the present, with very few words necessarily altered in the new recital. Just a suggestion.