I have noticed over the years, that some countries with a dictatorship are eg bombed.
And if the dictator dies, some countries move on to elect someone else.
But in other countries, when a dictator dies, the country still carries on in much the same way.
I noticed for instance, a few years back, when I think it was the or an Ayatollah died, the majority of the Iranian people did not want more of the same. But it was imposed on them.
I think of Libya, on the other hand, when Colonel Gadaffi was eventually killed, that the majority of the country were still behind him. And that did not just include his assistants.
I actually think that foreign policy makers would be wise to know which countries are which to be honest.
Coming back to America. The vast number of its citizens seem to back holding guns. So its problems,as of what happened a couple of days ago will remain.
As a poster said upthread, it would take a shooting that happened this week, to happen several a month, before the American citizens might change their minds about thinking it is ok for 50% of households to keep a gun in their own home.