My only point is that shoot to kill should not be a cops first priority. How many police shootings have we seen in the past 2 or 3 years. Clearly there is a major problem with training that needs to be addressed.
Well the major issue here is that we don't collect good stats on police shootings. So there's no actual answer. Instead what we have is everyone picking out individual events and making huge generalizations based on them. We're a big country and we're armed to the teeth. Police shootings happen. Whether there are too many? That's a very tough question to answer.
And like sexual assault, the media loves hyping these cases because there tends to be a lot of ambiguity. Police are supposed to use force to subdue criminals, and sometimes the use of lethal force is necessary. It's very hard to tell definitively what happened in a lot of cases, so our "beyond a reasonable doubt" system tends to find people innocent. Likewise, people are supposed to have sex, and when one participant comes out crying rape it's unfortunately a he said/she said situation, and again, "beyond a reasonable doubt" means they get off. I'm mostly ok with this because I don't have an expectation that our system is going to be perfect in all situations - these are the situations where there's generally no great answer and I'm happier staying biased towards keeping people out of jail.