So, you catch a 'thief'...

All sounds familiar. Gut instinct, you are probably right.
I stopped to help someone who accused a gentleman of trying to nick his scooter. The accused was wearing a full face helmet, Belstaff jacket, M/c boots and a courier bag . All looked authentic but he was walking very fast with his helmet on a very warm day. It did not add up. So I tried to talk to him to explain the situation, it went tits up with him wielding a large heavy pointy metal object at me and the accuser who now has blood pissing out of his head. I push him into the middle of the road and stand on his throat and tell the fucker to keep still. Old bill arrives. Blah, blah. 18 months later, Crown court, he finally pleads guilty. 100 plus previous, goes home. WTF.
Sorry for the ramble.

Justice = a French electronic music duo consisting of Gaspard Augé (born 21 May 1979 in Besançon) and Xavier de Rosnay