My little brother never done them nothing!!!!?

Me and my brother was walking home from seeing the fireworks down the road from our house " in the country" and some dudes in a car threw a firecracker by my little brother ear. I got so upset because he was my responcibly! Now my mom and dad is mad at me. I know these guys, should I go to them and beat their es? I'm 18 years old and they are 17,16,and 16. And my hands are regiserd in boxing. I was thinking about puting a mask on then beating their es because I really don't want to get in trouble by the laws.