That said, I think people need to recognize that in many aspects what's happening is connected to societal issues that gun control and gun regulations will have very little impact on - remember, even in Japan somebody could make some kind of battery ignited home-made shotgun and kill Shinzo Abe.
Countries with strict gun control enjoy far lower rates of firearm accidents, suicides, and murders. IMO it's clearly worth the tradeoff. Very few of us live in a place where only guns can solve our problems.
The fact that occasionally someone goes to great lengths to kill doesn't mean we should make it easier for everyone.
Australia seemed to have a deeper relationship with guns previously, that stemmed partially out of necessity (farming etc), but there are also a lot of parallels with US culture here – the American dream, being a colony hundreds of years ago, etc, some focus on personal rights and freedoms, being a federation of states, etc. I don't think it was as deep a relationship as the US, but coming from the UK it seemed that Australia had a very different view than the UK.
Australia turned this all around. The culture shifted, and people realised that for the greater good it was something they needed to get past, and they did.
Maybe there's hope for US gun control yet, although the turning point for Australia was a (single) mass shooting. Maybe the US needs a much bigger turning point. I'm a little surprised that the Las Vegas shooting a while ago didn't provide that.
In 2024, estimated 16,576 deaths in the US from guns (excluding suicide, which is a very large addition on top of that), and 499 mass shootings.