You realize the police sometimes have to shoot at people who are trying to murder them? Violent criminals deserve to have their threat capacity neutralized in the most effective way possible. If it can't be done with non-injurious force then so be it.
There are some few cases where it's reasonable for the police to shoot someone. But when they all have guns and no training for de-escalation or sound rules of engagement, they end up shooting rather a lot of people who aren't even trying to murder them, let alone likely to succeed.
