showing the pitched battle at a capitol entrance tunnel, site of some of the most violent confrontations with rioters, as police try to hold the line. jessica schneider has more details now on that footage and a trump ally who is cooperating with the january 6 committee. reporter: the three hour video just released after cnn and other outlets sued for access shows one of the most prolonged battles between capitol police and the pro trump mob, the video taken from a capitol security camera on the lower west terrace does not have sound, but it shows how dozens of rioters moved in on capitol police spraying the cops who stood guard with pepper spray, pointing strobing flashlights at them, and striking them with batons. more than an hour in when police pushed back, you can see a helmet knocked off of one officer s head. this as the house committee prepares to ramp up its probe in