And the law worked.
I saw a video of a guy down in Texas. They were cooking a little barbeque out back with maybe only 7-8 people. The scrappy and smallish, father had found his 7 year old girl, being mounted by some guy behind the shed !!!!!!.
He beat him to death.
The video starts as this father is having a beak down over the fact that he killed the guy. He kept screaming, "save him, save him!" Just hysterical. The girl was not hurt and nothing happened. He was just in time to break up a very ugly thing, but then he went ahead and murdered the guy before his daughter's very eyes. Woops.
The Sheriffs, however, were so concerned about the father, they didn't even take him in. They stayed with the family and talked to him soothingly, while the coroner cleaned up.
Justified. And that is Texas.