Kinda. Like littering and illegal dumping offer harborage to to pathogens and pests, stochastic political environments arising from sudden power vacuums give fuel and cover to some terrible politicians. A Trump assassination isn’t going to pave the way for another Mohandas Gandhi. If anything, the next Hitler or Stalin might grow from the corpse of Trump’s political movement. If a citizen of the next nation he threatens to annex assassinated him, it could be a Franz Ferdinand situation.