Examples of this?
Me. I was forcefully removed from the lobste.rs community by "pushcx" (after years of activity) for posting "a lot of really negative comments" and not playing along with his culturally insensitive offer to "help".
When will these people learn that faking cheerfulness cannot be imposed on the whole world? Anyway, to add insult to injury, all my comments with negative scores were deleted after the ban.
"I appreciate that you haven't attacked anyone", he wrote, before going on his little power trip. Involuntary humour is better than no humour at all, I guess...