is there any way you can avoid him in the future? or is he someone you have to keep in contact with (like, at work or something)?

you have every right to be angry, griffe. like P7 said, it looks like he just wanted an excuse to start a fight or something, take his anger out on someone.

you could always press charges, i think, if that was something you wanted to pursue. i know if someone assaulted me, and left me with injuries i was still dealing with the next day, that i would most certainly not want to let it go lightly.