There's a variety of things, everything from conversation on. When that fails, when the individual is non-responsive or continues to be violent and is a hazard to himself or to others, then you have the option of pepper spray, which is a pain compliance device. If the individual does not react to pain, then you go to others. You can try to break an arm or a leg with a baton--a very violent, damaging weapon. Another technique is called the “polyester pileup”, where you'll have five or six police officers jumping on an individual and bringing that individual to the ground. This often ends in injuries to all concerned, the police officers and the subject.
There's no easy solution to that question on what are the response techniques. It varies, depending on what's available and on hand.