Did a Secret Service agent just rough up a reporter at a Trump rally?

The video, shot at a rally in Virginia, is pretty convincing. 

The photographer on the ground is thought to be Christopher Morris of TIME, who is, perhaps ironically, known for his work in conflict zones. 

It isn’t clear what precipitated the scuffle, but reporters and other attendees have raised concerns about safety at Trump rallies for sometime. Protesters have reported being attacked at Trump events, sometimes with the billionaire’s seeming encouragementwhile members of the media have repeatedly criticized the dangerous atmosphere of permission Trump creates with regard to journalists covering his events.