Shitty behaviour isn't some negative "quid pro quo" deal. It's not something we trade, or build entitlements to. Harming another doesn't heal you, but rather makes the cesspit of humanity all the more putrid. Don't swim in such filth, pull yourself out and stand on the side. Imagine all this fighting as a swimming pool of crap, and you keep getting invited to jump on in... but instead you learn to seek ways to shut off the taps to that pool, or pour in a little clean water instead. The more you do that, the better our world becomes for everyone, you included.