I may have misunderstood you. I thought your original post was saying "Americans are more likely to be shot by their police because the police fear everyone they meet is armed." Are you instead saying that the police shouldn't be armed?
Anyway, we have a weird cultural issue here, where we let these things happen, and then even as half the people take to the streets, the other half cheer on the authorities. How we treat ourselves has become politicized.