Well, you're much more likely to be killed in a car accident wherever you live, and I don't have reason to believe that risk is particularly different in Canada or Australia. It's the delta between countries that matters, and from what I've read (mostly about Canada) I think by most metrics you are more likely to be killed by a cop in the States. We have a heavily armed and militarized police force here, and they have an awful relationship with many communities here. I'm sure there are parallels in Canada and Australia but certainly the popular perception is that the magnitude of the problem is larger here.