A letter bomb or car bomb.......Zionists were the first to use those ingenious killing mechanisms during their Invasion of Palestine.
No one has a monopoly on Brilliance, Good or Evil.
Nothing provokes a justified resentment of a Race, Religion etc any more than incessant claims to superiority; "Master Race", "Chosen People", whatever.
The Germans whose patents on countless medicines, inventions etc stolen by the Treaty of Versailles suffered incredibly, yet again and again!
....taken an aspirin lately?