2 police transition to Taser during arrest
Passenger headbutts air steward, is restrained with rear naked choke
Man pulls knife, gets knocked out by bouncer
Man takes down and chokes out truck driver
Crowd intervenes when triangle choke is applied during street fight in Brazil
Multiples intervene to stop man using rifle
Double leg takedown on hard surface causes knockout
Police officer’s head smashed into ground during brawl
St Kilda police, Melbourne Australia.