Why is Fox News staking out Media Matters’ HQ?

Liberal watchdog group Media Matters appears to be Fox News’s newest target. Karl Frisch explains that they caught a cameraman filming the organization’s headquarters today:

Earlier today a member of our research staff was on his way to lunch when he spotted a man filming the Media Matters office building from across the street.

When the staffer returned from lunch he spoke to one of our building’s great security guards and was told that the cameraman had initially been on our side of the street filming but they’d asked him to move. The cameraman identified himself as affiliated with “Fox TV” and said that his assignment was to take several exterior shots of the building from different angles.