Not just uncaught murderers, there are a lot of people who have killed without legally being considered murderers.
People who killed people in accidents such as driving accidents or hunting accidents
People who killed in self defense
Soldiers who killed enemy soldiers
Executioners
Police officers who have killed on duty
Doctors and nurses who have made mistakes that accidentally killed patients
Maybe. Don’t actually know, the ones I’m in contact with have pretty universally chilled out but who knows about the other ones. Though even with that I’m not stupid enough to assume I wouldn’t fall back into my ancestors ways of banditry and murder, just requires the right targets and enough leeway to get away with it. Would be pretty lucrative for example to raid those shitty little orthodox Mormon communities out in the desert especially with a crew.
But like I said, as of right now all the ones I know were killers are dead or so old that they won’t be pulling that shit again.