A guy a couple of miles from where I live killed a burglar by strangling him and wasn't prosecuted. It was a few years ago now, they were having a tussle and the homeowner got the burglar around the neck and held on, and on, and on until the thieving little cunt stopped struggling. The homeowner "allegedly" thought he had just choked the cunt out before calling the Cops, but Billy The Burglar was deaded. He was a young local junkie so he'd of probably died by now anyways so no great loss.
My uncle shoots someone who wanted to rob him when he was drunk in a cab. He got 3 1/2 years for 'inappropriate defence' and lost his gun license and job as a ranger. He had always anger issues.