I'd also like a statistic of how many people are murdered by thugs in blue costumes i.e. police. That one is always conveniently missing.
I believe all murders are generally included in the statistics, especially concerning the death of everybody. Regardless of your hatred for policemen, your probability of murder is very low compared to your likelihood of dying of heart disease or cancer.
If you want to reduce the rate of unjust murder by policemen, you could start wearing a sousveillance unit and follow the cops wherever you go. That is probably effective, but I am not sure that it is truly effective or the most efficient. If you're looking for efficient, you want the cops to wear a sousveillance system on their job.
Anyway, if you want to reduce your chance of dying, the best place to start is your heart. Research what is necessary to improve your heart's conditions and ways to achieve it. The doctor's advice of eating less and exercise more is the most useless advice ever, no matter how true it is. The problem is not knowledge of what will make you healthy, but in figuring out how to make it a habit so you don't stop exercising six months down the road.
Remember, the media like to focus on disaster porn and disaster porn happens to be rare and novel. Mass shooting don't happens everyday. So turn off your tv and research and make a rational decision.