Perhaps we are in or entering the trough of a natural tolerance cycle?
Over time, the attitude of society as a whole, towards those that are not seen as 'The Norm' improves.
We then reach a peak of positive attitude adjustment at which time, someone like Trump or Farrage or Tommy Fucking Robinson comes along and there is a period of retrograde movement in tolerance until we hit the bottom of the trough at which point, the attitude of society as a whole, towards those that are not seen as 'The Norm' improves to a point above the previous peak.
We then reach a peak of positive attitude adjustment at which time, someone like Trump or Farrage or Tommy Fucking Robinson comes along and there is a period of retrograde movement in tolerance until we hit the bottom of the trough at which point, the attitude of society as a whole, towards those that are not seen as 'The Norm' improves to a point above the previous peak.
And repeat.
Just a theory.