Ex, buddy, being an unarmed cop in America is suicidal.
Philando Castile was likely stopped for being black.,
But as you said, this case is not the norm.
There are a lot of truly hard cases that cops do deal with, white, black, brown, red and yellow, and they are armed.
You simply cannot use Canada as a baseline to draw conclusions about America. I know both countries well.
One is sheltered, entitled and is very compliant. Even the gangsters.
The other not so much.