New neighbor's children are a menace. How to deal with this?

Call police- disorderly conduct, vandalism, uncontrollable child in need of family services custody. If your kids are hit- assault charges as dangerous juvenile. Take some videos for evidence. Ask responding police for name and phone of meanest juvenile in Dojo to have him tell troublemakers to stop- when they 'attack' him the self defense response that leaves them on ground bleeding is not actionable by police. Find old grandma from old country farm- she'll use a belt on them and when police come won't be able to speak english beyond 'they steal my purse with pension money'