I think, expanding on this, it's important to note that persona-non-grata is given to a person who hasn't necessarily been accused of any crime. They just aren'

I think, expanding on this, it's important to note that persona-non-grata is given to a person who hasn't necessarily been accused of any crime. They just aren't welcome. In fact, a person who commits a crime might actually be welcome in another country that doesn't consider your infraction to be criminal (e.g. if you're in jail for being gay, probably there are many countries that would happily give you refuge if you could somehow figure a way to break out of jail and cross their border). To truly be banned from the world, you'd likely have committed serious crimes. And thus you wouldn't just be "persona-non-grata" but charged with something like war-crimes in international court. Then I think many countries would love to have you... locked in a cell... but safely within their borders.