The police only kills about 1000 people per year in the USA, and some of those kills are justified. Including it in the same list as global warming is IMO an example of 'Availability bias means that after we see negativity, we overestimate its significance' mentioned in the article.
You're downplaying the damage those murders do black communities. And for every black person murdered, 1,000 more are terrorized with less than lethal force.