At the risk of sounding like a sadistic pervert, what are the films depicted where the assailants are pissing on their victims? I don't think I've seen these films.
The third one is from The Big Racket. I wasn't familiar with the other two, but Mike Malloy revealed
that they're from (in order) La malavita attacca. La polizia risponde. and Napoli... i 5 della squadra speciale, and as Malloy also points out, there are (sadly) no English-language releases of the latter two.
If you haven't seen The Big Racket, I highly recommend it. Very cheap from Blue Underground, whether it be as a single or in a three pack with Heroin Busters and Street Law, and it's available streaming on Amazon. That having been said, this release is dub only and not high-def (even on the streaming version, which was uploaded years later), and the dub is a real unique, hilarious beast--exerting every bit of effort possible to not cuss (probably done in some misguided attempt to make television sales in English-language territories).