I've forgotten the names of the arts, but it's clear the guy practices a weapons-based art.

I think the poliisi handled it perfectly. He wasn't attacking civilians and wasn't currently pounding on anybody, so they try to keep him in check before backup can arrive, then as he starts fashioning his weapons they realize now is the best time. You'll notice the poliisi didn't hit him in the face. Chop at the leg or the shoulder, even though they looked like sallies doing so.

It really makes you think, in the fucking United States of Teabaggers, this guy would be getting curbed stomped by the boys in blue. If Finland or similar nations weren't so frickin freezing I'd consider moving there