As for your comparison, the actual threat from more Luigis is small. There are at least thousands of CEOs at or above the level of Armstrong? And one death, over a seeming period of several years? And the motive wasn't just "elites bad", but very specific healthcare denials.
Meanwhile Trump is actively attacking many companies and institutions. Part of the pressure are the populist memes that makes the masses unsympathetic to their plights, even though they are the structure of our society.