While deadly police incidents seem less common in Australia, don't kid yourself that our police always get it right.
They could do with better de-escalation training to deal with situations in critical environments like crowds [1] or when dealing with mentally ill people [2].
I think anyone carry a deadly weapon, civilian or government officer should bear extra responsibility to safeguard the safety of all people around them.
[1] http://www.abc.net.au/news/2016-06-09/four-injured-as-police...