The issue isn't just being killed by police - It's also being beaten by police, having things unlawfully seized by police, being unjustly cited or arrested by police, and so on. So yeah, being unjustly arrested and spending a weekend in jail waiting to be arraigned on Monday is better than being killed, but it still sucks.
https://www.factcheck.org/2015/11/trump-retweets-bogus-crime...
Starting with the most obvious point, the Crime Statistics Bureau of San Francisco doesn't exist.
Availability: A heuristic for judging frequency and probability
edit:
> The reality of the availability bias isn't in question, it's whether or not people's belief about police brutality is accurate
It would be nice to have some objective evidence showing why this example is a special case immune to availability bias.
The "unarmed black man shot and killed by police" is heavily pushed by media companies because, well, its an emotional issue that gets ratings, sells newspapers, and gets clicks. Same thing with "terrorist threats", shark bites, and airline crashes. People view it because it's dramatic and it sticks in your head more because of it.
This bias is called "availability bias" and it causes people to see the problem as much greater than it actually is.