Not Quite Right

Link: http://www.nzherald.co.nz/section/story.cfm?c_id=1&ObjectID=10363045

If he was limping and only displaying a black eye, they obviously didn't do a particularly good job of beating him.
Given that they would've been wielding PR-24's, which are aluminium riot batons, four cops on a supposedly hog-tied man should've put him into hospital. I think he would've noticed if such punishment were inflicted on him.

Personally, I'd say he deserved whatever they gave him. I might, maybe, be able to muster some sympathy if he'd ended up in a coma, or dead. Possibly. More likely I'd call it good riddance to bad rubbish.
I don't give much credence to the claims that the Police made it worse, either. When a bunch of cops show up and start waving their OC spray around, you sit down and shut up. If you throw things at them, it's all on and you're fair game.