Police in Australia carry guns and yet suspects being shot dead is rare enough that when it happens it tends to be headline news (often nationally). Perhaps part of this is that civilians in Australia are far less likely to be carrying weapons themselves, so police do not have to be as cautious as in the US.
Ultimately, I don't believe the problem lies with the firearms but with the culture. As an Australian visiting or moving to the US, you will inevitably be reminded that if a US police officer pulls you over you should not get out of your car. I've had people tell me that if you do get out of the car, the officer will draw their weapon and take aim. Perhaps that is exaggerated, but to me that is an absolutely ludicrous reaction. It paints a picture of US police as having an extremely paranoid, "us vs. them" mindset. What I read in the news and have witnessed since I moved here seems to confirm that.
Ultimately, I don't believe the problem lies with the firearms but with the culture. As an Australian visiting or moving to the US, you will inevitably be reminded that if a US police officer pulls you over you should not get out of your car. I've had people tell me that if you do get out of the car, the officer will draw their weapon and take aim. Perhaps that is exaggerated, but to me that is an absolutely ludicrous reaction. It paints a picture of US police as having an extremely paranoid, "us vs. them" mindset. What I read in the news and have witnessed since I moved here seems to confirm that.