Help, Feeling very angry!

Hello Everyone

This is mostly a vent, but I would be grateful for any feedback...

I am really really angry at an ex partner!!! In the 5yrs since we've been apart, he has caused serious upset for my family. I am also very angry at our crappy patriarchal led society, who have been letting him get away his damaging behaviour!!!
I've made some progress at seeing the bigger picture, maybe (victim/abuser) scenario, but don't know how to deal with my anger in a constructive way, and get back to my centre...

Thanks for listening...