Here is a useful text based diagram for imbeciles who cannot draw logically moderated conclusions. As that is a complex sentence for an imbecile, I'll clarify: It is the territory of the moron to take a negative instance, blow it out of proportion and use it to justify the uselessness of ALL attempts to
decrease negative instances. The key factor here is that the idea is to
decrease, not
reduce to zero.
The (not to scale) situation today:
C u n t s Killed
US------------------------------------------------------------Australia------Zero guns/deaths
Have a look at the diagram again, my my my, there is some space in between the US and Australia. A lot of c u n t s killed. When a shooting happens in Australia, it doesn't mean that gun control doesn't work. My hackneyed graph (and the true statistics) will
still show a fucking huge difference between the recent shooting. Australia has plenty of c u n t s to kill left, if you're going to prove that gun control doesn't work based on c u n t s dying.
------------------------------------------------------------ <- some work to be done for Australians.
Lots of lucky c u n t s in Australia walking around, unharmed. Feeling safe. Not rushing out to buy guns to make themselves safe

Perhaps, if it were possible for the US to be like AU (and it really doesn't look like it is), this might be the diagram after ten years. You'll note that there are still some unlucky people.
US Before--------------------------------US After10----------------------------Australia------Zero guns
Maybe twenty years
US Before--------------------------------US After10------------US After 20----------------Australia------Zero guns
Gun deaths could get to AU levels in the US, it's just going to take way longer (multiple decades) than any political term and people are rightfully afraid of the period of equalisation where they have relinquished their guns and others have not.
The important thing is to not think like a fucking moron. This means looking at the numbers, not the individual occurrences. People will still die. Less of them - that's the goal.