The protests are grounded in legitimate grievances, and engaging in public protest is a core right of the citizenry.
The violence effectively delegitimizes these protests in the eyes of millions of fellow citizens. I'm guessing that you may be one of them.
There are serious systemic issues with policing in America and if one only focuses on the bad actors on the "opposing side" then there is no dialog, only opposing monologues.
Failing to properly report the scale of violence and looting whilst simultaneously questioning the legitimacy of the response to it though exposes the media narrative for what it is, not objective.