"He will pay for what he did." You seem to have certain knowledge of the future. Dismissively saying everything will be OK does not actually make it happen.
I'm only going from past experience: If anything is learned from the many times this story has played out in the past, the cops wont wont pay. In fact, until an independent investigation: the cops were well on their way to freedom:
"The criminal complaint said that the autopsy “revealed no physical findings that support a diagnosis of traumatic asphyxia or strangulation.” Mr. Floyd, the complaint said, had underlying health conditions, including coronary artery disease and hypertensive heart disease."
https://www.nytimes.com/article/george-floyd-autopsy-michael...
These are things people are protesting:
0. That a video has to exist
1. That nationwide protests need to happen before an officer is charged
2. That when it happens, many non-PoC say "oh he probably did something wrong [thus i dont care if the alleged criminal was killed]"
3. That when it happens, non-PoC say "oh it will be OK" knowing full well their own children will never be subject to this type of treatment.
People are not angry about this incident only they are angry about it happening over and over and over w/o any real systemic change.