Some of the posts here are laughable.
If you lot think you know how to deal with large scale events like this, volunteer as a Special Constable and help out. If not, pipe down.
To restrain someone who is fighting you (often with a weapon) you need a MINIMUM of three people to do it without causing injury to you or them. Yes, in a martial art situation it can be done 1 on 1. But these scumbags complain without hesitation to try and get officers sacked or get a payout. So you can just dive in and do what you want. You need to 'control' a fight and take a limb each, doing your best not to injure the suspect. So multiple officers per suspect.
There were hundreds there. Who were all Police hating, chavvy scum that would pile on officers to try and do serious harm to them.
So you'd need hundreds of officers. Hundreds.
You arrest hundreds of people (and you WOULD be arresting, not just breaking it up, because these people don't leave quietly) you need hundreds of cells for them in Custody.
Dozens of staff to monitor them until they are released.
Should every single GMP officer on duty be taken off DV jobs and everything else that is currently happening to break up that funeral?
Then you'd all be moaning about that too.
These scumbags would just LOVE an opportunity to hurt an officer. Why should an officer on a starting wage of £19k a year risk their life just because members of the public who have no idea about actual police work think they should?
For an offence that the suspect would only get a caution for.
First and foremost, it's about risk assessment and threat to life.