squishy I don't deny that it is easier to recognise insults when they are aimed at oneself than at others. I have felt physically shaken on more than one occasion by insults aimed at me as a leave voter whereas I might not react in the same way to insults aimed at remain voters. So yes, whilst I wouldn't say it is confirmation bias, I agree we may recognise insults to our own group more.
But even given that, I really find it hard to believe that ordinary remain voters have been subjected to a similar type and amount of insults as ordinary leave voters.
Please can you tell me what insults have been aimed at you as a remain voter which are as insulting as the following which have been aimed at me as a leave voter:
stupid
racist, xenophobic
fascist
"old" (inverted comments as I am not sure when it became a bad thing to be old) and "therefore" not worthy of having a vote
small-minded, inward looking, little Englander
duped, conned, shouldn't have been given the responsibility of a vote
an ally of the murderer of Jo Cox
that I don't care about my children's future aka that I don't care about my children
(sources: Guardian, New Statesman, MN, Facebook (which I left on 24th June thank heavens), Guardian comments, etc)