Actually they do arrest them *
I'm not Mr Tolerant on illegal demonstrations
* apparently though they can't arrest Farage for saying about Jews, 'Gas them'
I'm not sure plod could go into schools 50 years ago and arrest kids for saying 'four eyes', 'fatty', 'carrot head' or any other juvenile insult...

Also, running around the playground with your arms out pretending to be a Spitfire and shouting 'TAK-A-TAK-A-TAK-A' was strangely tolerated...
No doubt the BBC (which appears to be obsessed by this story) will be looking into TV series of the age like the Black and White Minstrels, Love Thy Neighbour and Til Death Us Do Part to consider how their views clash with modern day standards...?
