These sort of teens, are young and stupid.
Don't get into stupid fight with them, because they will do stupid
things, that will land them all into stupid troubles with LAW, and
you get injured in a stupid way, and then have to live out your
stupid life!
IGNORE. Pretend never see them.
I always say; RUN if they really wanna find trouble with you and
you are outnumbered. NO POINT, being a dead or paralysed
hero.
Street fights, are never fought FAIR.