Or Clinton bombing a factory that made medicines in Sudan to take our mind of Monica? There are a lot of murderers around that never get brought to trial.
Things that seem impossible and unrealistic in one part of the world and one part of history are just normal in some other places and times. Not having policemen on the streets with guns would seem like a crazy dream in some places and times. Not having prisons that make people worse seems like a crazy dream in some places and times. There are places and times where murder is a routine activity, and places and times where it is a rare and terrible occurrence.
It's too easy to think that the way it is in our place and our time is how it's always got to be.
And having executions only happens in a relatively few countries, and most of them are not very nice places (the exception on the whole being the USA.) The rest of the world gets along pretty well without them. Honest.