
Adjoint |

Since you're asking about legality, you need to determine whether it is a crime to be evil in Mendev. Because punching a person who commited no crime would likely be illegal.
There may be some laws against people who emit evil aura, like they would have to get subjected to personal search and would be under constant observation, but as long as they follow those laws I don't think it would be legal to use violence against them.

SOLDIER-1st |

Yeah, I would say that would probably be illegal. Particularly in a more Lawful country. Maybe in a CG country, but even then I doubt it (and I also cannot think of such a one off the top of my head except for Kyonin, and the elves don't strike me as being socially accepting of random violence like that).

Adjoint |

Oh, most likely some places have paladin guards that scan everyone entering, but more often paladins (and clerics) are more useful doing something else. Moreover most people don't have a detectable aura even if they are evil, and those who do have ways to mask theoir alignment if they expect to be scanned.

MidsouthGuy |

Oh, most likely some places have paladin guards that scan everyone entering, but more often paladins (and clerics) are more useful doing something else. Moreover most people don't have a detectable aura even if they are evil, and those who do have ways to mask theoir alignment if they expect to be scanned.
Now I'm imagining some secret Mendevian research facility with Paladin guards stationed at the entrance and souped up Circle Against Evil spells all over the place to make sure no Evil aligned people get in.

Grandis |

Uh... Even in Cheliax, it's a crime to punch someone randomly in the streets. The question is WHY you are punching them, and how much, that leads to legality.
In Mendev, you'll probably be in trouble for being involved in a fight where you defended yourself against muggers if it drags into any sort of public eye.
In Cheliax, you'll be in trouble if your fight causes any public damage, or occurs to frequently, or just in the general vicinity of someone in a bad mood.
In Avistan, you're going to be expected to simply handle yourself in a duel you started, but do so in a manner of honor.
Most everywhere else, it's simply a matter of "don't pick fights with non-a~+@!~@s, don't be a bully."