[belorn]

> Massacres of politicans are rarely followed by everything going calmly back to normal

That is correct. Massacres of politicans are generally followed by military factions taking control of a country, also generally a military faction that participated in the massacre. Those are coups.

When we have massacre of politicians like the 2011 Norway attacks, we call it a domestic terrorism and throw the guilty into jail, and then everything goes mostly calmly back to normal. The risk that those actually succeed in changing the government of a democracy is thankfully very slim. Obviously they are still very horrible acts.