Any MA has killing techniques.
A simple RNC choke, taught to a brand new, 1 day old White belt in Brazilian jiu-Jitsu...is a killing technique. If a Boxer knocks you out with his first punch in a streetfight, he now has the option to either go home or stay to stomp your head in repeatedly until your skull caves in and you die. Slight chance that you may have already died when KO'ed with that 1st punch and landing head first into the cement, cracking the back of your head.
A simple RNC choke, taught to a brand new, 1 day old White belt in Brazilian jiu-Jitsu...is a killing technique. If a Boxer knocks you out with his first punch in a streetfight, he now has the option to either go home or stay to stomp your head in repeatedly until your skull caves in and you die. Slight chance that you may have already died when KO'ed with that 1st punch and landing head first into the cement, cracking the back of your head.