Good summary, Robomatic.

Of course both Trump supporters and EU leavers will deny any element of fear, ignorance or racism and I don't believe for one minute that either group have a majority of people displaying those attributes. But, as you say, it doesn't take many to make a difference.

I have just finished re-reading "The Truth" by Terry Pratchett. One of the lines that was resonant with me then is even more so now.

A lie can run round the world before the truth has got its boots on.