We shouldn't be allowed to kill suspect if he got no guns bcz let's be honest we all sometimes accidently punched someone while we had no guns and when cops kill us for -'threat' it's ridiculous.
The thing I wanna suggest is, we shouldn't be able to kill criminals even they do threat crimes (water, Mw , Securicar robbery, Air kill) are exception, if the -'suspect is unarmed' msg shows we shouldn't be allowed to kill them.