Figure of 500 was taken from the metro , no idea if their estimate was close though .
http://metro.co.uk/2017/06/21/clash...protesters-as-day-of-rage-turns-ugly-6725531/
With John mcdonnell calling for 1 million to take to the streets on July 1st to force the conservatives out of number 10 the potential for serious disorder must shirley be taken seriously .
Should be ruled an illegal rally if he is inciting them to 'force the Tories from power', isn't that what an election is for? You know, the one that JC lost.