Donald TrumpDonald John TrumpAccuser says Trump should be afraid of the truth Woman behind pro-Trump Facebook page denies being influenced by Russians Shulkin says he has White House approval to root out 'subversion' at VA MORE's campaign manager, Corey Lewandowski, appeared to grab and pull a protester by his collar at a rally in Tucson, Ariz., Saturday. 

ADVERTISEMENT
In a video, Lewandowski and another man can be seen talking sternly to the protester. As the man tries to walk away, Lewandowski grabs him by the back of his shirt collar and yanks him backward. 

Lewandowski has been under fire for allegedly roughly grabbing former Breitbart reporter Michelle Fields at a campaign event, which the Trump camp denies. Fields resigned from Breitbart and filed criminal charges against Lewandowski.