As the world becomes more populated, and as our leaders become more evil, I would have expected more assassinations. But we have less. So clearly I have no idea how humans work.
Discussion
There was a strong upward trend in the late 1800s, with Heads of State being blown up or shot all over the place. But it petered out.
I would posit that contemporary systems of domination are less personalised and more institutional. And VIP protection TTPs have been developed, with its own classes of specialists.
The USA has lagged the rest of the West in prevention of assassination attempts on Heads of State, but most of those may have been inside jobs...
Psyops. The 'crazies' only ever attack other civilians, and simply by the odds, we know that is statistically improbable.
Hmmmm.
Agree, I think there's a lot of LIHOP, and quite a bit of MIHOP.
But our data set is surely incomplete.
There may be many plots to kill decision makers where the plotters never get the right opportunity. And other plots are thwarted but reporting on them wouldn't suit the narrative, so the perpetrators just end in shallow graves in the desert etc.