On Monday, right-rated news outlet Revolver News published a story calling for probes into whether the government may have had undercover agents within extremist groups that participated in the deadly violence at the U.S. Capitol on Jan. 6. Fox News host Tucker Carlson later picked up the story on his Tuesday night show. The argument points to the indictments of several people who were allegedly involved in Capitol breach planning. Those indictments allegedly reference several co-conspirators who were not indicted. Carlson speculated the unindicted co-conspirators were not charged because those people are undercover law enforcement officers; and, if this the case, the government would have known about the breach, and could have acted to stop the violence, but failed to do so. 

Some right-rated outlets, along with Fox News, picked up Revolver News' story. On Wednesday, Twitter highlighted the story, saying that "some people who participated in the attacks were named as 'unindicted co-conspirators'...and according to legal experts, undercover agents cannot be named as unindicted co-conspirators." Carlson later responded to the Twitter highlight, saying, "so in an effort to shut us down Twitter just confirmed what we suggested was true! Thanks Twitter! They are morons!" Headlines from center- and left-rated outlets tended to shoot the article down as a false conspiracy; some, including a professor Snopes cited, still hold it could be "possible that there were undercover FBI agents who had infiltrated extremist organizations that participated in the attack on the Capitol."