Anthony Cumia -- one half of popular radio duo "Opie and Anthony" -- was fired this morning for going on an online racial rant earlier this week.

For those who missed it ... Cumia called a black woman a "c*** animal" for allegedly punching him in the face while he took pictures of people in Times Square. He then went on an intense Twitter rant.

Anthony's now ex-bosses say they made the decision to fire him because the postings are "abhorrent to SiriusXM, and his behavior is wholly inconsistent with what SiriusXm represents."

It's unclear if the show will be cancelled, or if Anthony will just be replaced. Opie and Anthony have been broadcasting together since 1995.

Cumia tweeted Friday, "“We are living in a strange backward world. Where people support the attacker & the victim is the villain.”