I do see the point of the people saying the police have enough to be going on with. But these protests have been big and peaceful and show the best side of Britain instead of the worst.
If they can change the narrative and make it clear that racist views are not welcome and will not be tolerated then they will have been worthwhile.
They also show up the idea that I have heard that there has been "violence on both sides" (and there may have been pockets but I have seen acquaintances implying this is not being accurately reported).
Given the police will have been drafted in to manage the expected right wing protests, a peaceful protest and home/back to the nick for a cuppa by 11pm will be a welcome success I hope. Certainly must beat having bricks thrown at you like the last few days.