How to Deal with Racist People?

ok so last night my sister and I went out to get snacks and stuff at walmart and while we were in the parking lot leaving we caught with my sister and her husband and then they start talking and then some idiots yelled Beaners Suck which the funny thing is that my sisters husband is white haha and my sister starts to practically mouth words to them because they immediately jumped in the car now when this happens i feel like grabing a crwobar or stabbing a person haha I wouldn't I'm 14 but should I say something think outside the box for a moment please what's something I could say and don't please tell me to stay quite haha it was like some dumb kardashian moment and I really only get mean when it's only me present and these mo fos think they can mess with me cause I have glasses

Suggestion:

you should have gone with what you were thinking of doing,i know people always trash latinos,one guy told me that i should be arrested of being illegal(i am not illegal by the way this is just a moron who thought just because i am latino i'm illegal) so what did i do? i beat the crap out of him with his own ledge hammer.