Fox News' Tucker Carlson reported last night the Federal Bureau of Investigation has collaborated with the Southern Poverty Law Center, a controversial left-wing group that often promotes misguided and false accusations of hate against conservatives and right-leaning organizations, for input and advice on various investigations.

“Well as you already know if you’ve been paying any attention at all, the Southern Poverty Law Center is a fraudulent enterprise...It’s a left-wing political group that uses ‘hate crime’ designations to target its ideological enemies and to crush people,” Carlson said on last night’s episode of “Tucker Carlson Tonight.”

“The SPLC has repeatedly been allowed to brief the FBI on alleged domestic terrorist threats to this country,” Carlson added. “Disturbingly though, the relationship is ongoing, if you can believe it…Despite multiple requests from this program, the FBI has refused to describe the extent of its collaboration with the SPLC, we’ve asked repeatedly, or even to explain why it continues to work with a group like that,” the Daily Caller founder noted.

As the DC’s Peter Hasson reports, FBI spokeswoman Jacqueline Maguire provided a statement to the show, saying, “For many years, the FBI has engaged with various organizations, both formally and informally...Such outreach is a critical component of the FBI’s mission, and we welcome information from these organizations on any possible violations of civil rights, hate crimes, or other potential crimes or threats,” Maguire added.

Carlson described that remark as a "meaningless boilerplate statement."

But, Department of Justice spokeswoman Sarah Isgur Flores told the show that, “The Attorney General has directed the FBI to reevaluate their relationships with groups like this to ensure the FBI does not partner with any group that discriminates."

As Tucker noted, in short, the SPLC "lies." The group regularly labels benign conservative thought as "hate speech."

The group one time added Housing and Urban Development Secretary Dr. Ben Carson on an “extremist watch list" because of a "quote in which he said: 'Marriage is between a man and a woman; it’s a well-established pillar of society.'"