as upset as he was over an “unforced error” on Monday, Daily Show host Jon Stewart saved the most anger for Fox & Friends host Brian Kilmeade for invoking the 9/11 attacks to paint Stewart as being anti-police.

“By the way, jackass, you can truly grieve for every officer who’s been lost in the line of duty in this country, and still be troubled by cases of police overreach,” Stewart said. “Those two ideas are not mutually exclusive. You can have great regard for law enforcement and still want them to be held to high standards.”

Stewart opened the show by apologizing for mistakenly listing Dante Parker alongside recent victims of police shootings like Tamir Rice and John Crawford in Ohio. Parker was actually Tased during an encounter with San Bernardino County sheriff’s deputies this past August before dying at a local hospital. His cause of death was listed as a drug overdose.

Stewart was upset with himself for the error, he said, because it would shift the discussion away from the larger issues surrounding police use of force.

“That’s what’s so tough about working in media ‘counter-errorism,’” he explained. “The Daily Show has to be right 100 percent of the time; Fox only has to be right once.”

Fox News quickly accused Stewart of using his show to “slam the cops.” Kilmeade later mentioned that 85 New York City police officers were killed after the attacks “in case [Stewart] wants to include it.”

“F*ck you, Brian,” Stewart said. “Seriously. F*ck you. That is so far out of line, that even within the confines of this bit — ostensibly accepting blame for everything that’s coming my way for a factual error I really do regret, f*ck you. Ears, eyes, nose and throat. In fact, if I hadn’t told you to f*ck off, I would have had to apologize on tomorrow night’s show for being factually incorrect.