Toxic Player REALLY out of line.

Today, I went into a normal game with a friend. We were making simple conversation, nothing two players on a game wouldn't do, and suddenly we were being attacked by two members of the group of three we were queued with. Normally, I would just ignore them, but they began to make extremely rude statements that included some seriously illegal and obscene accusations in them. I reported them in the end game screen, but also took a screenshot. Do I post it here or send it some where else?