I think the media desensitize us to acts of violence, through movies, through overexposure to 'radical' acts on the tv.
Ultimately it's in the hands of the people to change what is acceptable and not acceptable, and I just hope that we can all act in a more enlightened considerate and caring state with each other..
I'm sorry for your friends loss. :<
You've nailed it right there!
My friend is a tough one he manages and lives a normally life. Thankfully he can still move one side a bit. Communities like @Steemit will change the paradigm and when the hundredth monkey awakes ... wow :)