You obviously don't know very much about what happened here,
The March was "UK Against Hate" and "Gays against Sharia",
UK against Hate was organised by Tommy Robinson and Gays Against Sharia was organised by a guy called Tommy English you can read about them both on
The Rebel
It was actually billed as a silient march and you can clearly see on youtube videos where the organisers told the crowd to stay calm etc
The issue was when Antifa protesters turned up and started hauling abuse and throwing objects at the guys doing the march,
If you look at the speakers that were there and the people in the march you will realize this was nothing to do with race but people standing up against terror as they have had enough, of their family and kids getting blown, stabbed or run over
As i mentioned you probably don't know a great deal on the subject as you only see what is portrayed in the media, if you would like to know more let me know and i will show you the videos etc which as easily found on Youtube,
https://www.therebel.media/uk_against_hate