Having dealt with a similar situation with an antisocial family, I would recommend just moving as soon as possible. It's not worth spending your time and energy

Having dealt with a similar situation with an antisocial family, I would recommend just moving as soon as possible. It's not worth spending your time and energy on something which you can't change. Let them chase everyone away and the local land and building owners will suffer. Eventually some knee caps will go missing thanks to someone even less reputable than the local mafia...