Here's the problem with the left: A young man, with a legal rifle, went into a city to help protect a relative's property and killed a child molester and an abuser of a female. Righteous kills.
I'm not aware of any "relative's property" being defended, and the criminal history of the deceased attackers isn't legally relevant. The law does not permit the unprovoked killing of child molester or abusers of females by armed citizens.
The individuals who were shot were attacking a man with a rifle, and he had a reasonable expectation of imminent bodily harm from their actions - hence; self defense.