If you watch various videos people posted on social media and not just the news ones (which also showed the same to be fair), it's really obvious they were looking for fights constantly. They were far right supporters and the old style football fans, drinking heavily and geared up for a fight (balaclavas, weapons etc). They really targeted the police, trying to goad them with chants and look for points of weakness in the lines, and it felt like the majority of people there were doing it or supporting those who were. There were almost no women and non white people. One thing I found funny was they were singing "England till I die" in most videos but in one to an obviously Welsh police unit, and they didn't see the irony there.
The march was complete opposite, it was a very diverse group of people, actually mainly women, marching through and chanting peaceful messages. They weren't squaring off to the police who were more on the sidelines. There were some small groups of people ready for fight and squaring off to the police at points or when the counter demonstrators were close but it was such a small minority overall. Even the videos where police took away some of the banners were quite civil. The protesters were arguing back with words only and no pushing and shoving.
I have to say, the police seemed to get it right and helped keep things as peaceful as possible considering the tension. A lot of eyes were on them. It seemed like half the protestors had cameras and there were tons of journalists looking for action.
They know they're gone so trying to (1) extract as much money as they can now and (2) fuck up the country as much as possible so labour have a harder job in the hope they can get elected quicker.
No aims to improve the country as a whole, or the people within it in any shape or form. They should be kicked out of the country and sent to Jersey or cayman Islands.