vocal opposition by what is, after all, a minority. A vocal, and easily offended group of men seem to have become very powerful in certain sectors and have become successful in closing down debate
I think some of it is apathy; the drive to promote certain beliefs and cultures is a driving force to many to an extent that would shock the average tolerant-but-not-that-arsed British citizen.
Partly ignorance: a well-meaning acquaintance who made a huge fuss about removing the pork sausages from a buffet that a Sikh colleague was attending, demanding we check the meat was Halal, which anyone claiming such cultural sophistication should know, is forbidden to Sikhs.
I was reminded of 1984. even then; there was a sinister quality to her stupidity and the sheep-like horror of other colleagues and rush to de-sausage the table.
And I think that virtue-signalling is the third element. I have used the phrase moral hard-on before. I believe that many fellow citizens, particularly those who have limited experience of actually living in other cultures get a huge rush telling the rest of us we are racist and small-minded.