I thought that for a long time, until I actually posted a fairly normal (for Europe) opinion from outside the spectrum of US centre-left thought and had it inst

I thought that for a long time, until I actually posted a fairly normal (for Europe) opinion from outside the spectrum of US centre-left thought and had it instantly deleted. Then I realised what appeared to be an unusually well behaved internet community is (was?) probably just a very strictly policed echo chamber.