Shooting a peacefully-walking cameraman who is filming a police line from a clear and respectful distance — there is no violent action visible in the film anywhere — is felony assault if you or I do it.
Why isn't the cop who did this under arrest?
Stop calling this sort of incident “brutality” and start calling it what the clear video evidence appears to show: A felony.
90% of success is showing up. Getting the math right is the other 50%.