Are these comments on your blog, or real life friends, or both?
>politics are still left of centre
The whole left-right thing is really a false dichotomy. It sounds to me like you associated/associate with extremists of political correctness.
I hold some very progressive ideologies, but I have never faced ridicule if I don't "tow the line" as you are experiencing. But then again I don't blog or share my views that publicly.