Wasting no time, RWNJ stalwart PJ Media is blaming the Fox 4 ramming incident on…….
Chuck Todd.
Car Ramming Attack on Dallas Fox Affiliate After ‘Meet the Press’ Host Says to ‘Fight Back’ Against Fox News

Actual information from the Dallas Police points to a rather different motive:

The man ranted about “high treason” and also mentioned a sheriff’s department.
A Dallas police spokesperson later said the man appeared to be upset about an officer-involved shooting elsewhere and the flyers scattered along the south side of the building were “mostly rambling.”

I did a search for police shootings involving sheriff’s officers in Texas, but there have been so many it’s hard to speculate about which one might have triggered this nut.