do we really know already?
America has very high rates of violent crime, and because of that, assassinating a former president would be really difficult.
Source for this assertion? Just Japan's page alone has more assassinated politicians: https://en.wikipedia.org/wiki/Category:Assassinated_Japanese...
Show me the source showing the US has more assassinations than anywhere else in the world. Because a list of 4 assassinated Presidents over 300 years doesn't make that obvious to me.
Thanks in advance for your no-doubt quick cooperation to cite sources.
"levels of gun crime" is an irrelevant metric here. It was not even an actual gun (which probably illustrates how hard it must be to find a firearm in Japan).
I mean... I seems like a real gun to me.