The person in question, must have repeatedly done something to directly harm you, your family, or another member of your family. Unwarranted Harm in a financial (+10,000$) or repeated physical way, there has to be tangible damages, disrespect is not a reason to kill someone. This also means you cannot PK someone JUST for being part of an enemy faction. Having continued gunfights, scams or warnings about territory, money or other continued violent disputes can cause escalation to a PK. (Be sure to record all encounters/transgressions)
Disrespect [0 - 10k] - Max escalation Level 1
Disrespect of a boss or made men. No one cares if a group of associates or soldiers are insulted, it’s part of their job. Should someone, capo and above, intentionally go out of their way to insult other made men or bosses a transgression for disrespect can be considered and either a tax or apology demanded depending on the severity of the disrespect [If both men insulted each other it’s also useful to simply squash the beef]. Generally factions you are neutral with or in an alliance with will take this seriously. A faction you are opposed to likely won’t care.
Making him pay 100k Tax on a 10k max tax then demanding an apology.. Crazy work.