Even if someone misbehaves you don't cook them alive. It's an abuse of power.
Once again, you are describing something in an extreme light in order to attempt to prove your point.
Cut and paste from the article below to offset your "cook them alive" comment:
The sheriff unveiled the device last week and said it would be installed in the dorm of a jail in north Los Angeles County. It is far less powerful than the military version and has various safeguards in place, including a three-second limit to each beam of heat.
The natural response when blasted to leap out the way would be helpful in bringing difficult inmates under control and quelling riots, the sheriff said.
But the sheriff was creating a dangerous environment with "a weapon that can cause serious injury that is being put into a place where there is a long history of abuse of prisoners," ACLU attorney Peter Eliasberg said. "That is a toxic combination."
Cmdr. Bob Osborne, who oversees technology for the sheriff's department, said the concerns were unfounded. He said he stood in front of the beam more than 50 times and that it never caused any sort of lasting damage.
"The neat thing with this device is you experience pain but you are not injured by it," Osborne said. "It doesn't injure your skin, the beam doesn't have the power to do that."
He said the device would be a more humane way of dealing with jail disturbances. Unlike hitting inmates with batons or deploying tear gas, a shot from the beam has no aftereffects, he said.
Well this is the easy answer of course. 
