Protestors are not cohesive groups, and looters are even a step further removed. They're people who take advantage of the confusion of protests.
And anyway, property damage during a protest is older than the Constitution (see: Boston tea party).
And moreover I think that police killings are kind of the top line item because that is punchy, but most activists would say their problem is with the entrenched structures that allow police to behave badly with impunity. It's impossible to sue an officer as an individual for even the most egregious offenses, police unions have fought really hard to protect bad officers and policy, even when people do "win" legal action against the police the bill is footed by the taxpayers, and in general the thousands of bad interactions people have and film that never even get attention. I'm biased, but I think that the system of policing in the country is more corrupted by bad actors than the protests were.
Accidents: 76.6 deaths per 100,000, Suicide: 26.7 deaths per 100,000, Non-police homicide: 22.0 deaths per 100,000, Heart Disease: 7.0 deaths per 100,000, Cancer: 6.3 deaths per 100,000, Police violence: 1.8 deaths per 100,000