I think H L Mencken answered his question before any of us was born.
“The whole aim of practical politics is to keep the populace alarmed (and hence clamorous to be led to safety) by menacing it with an endless series of hobgoblins, all of them imaginary.”
As an example, climate change and rising seas will require some costly engineering, but contrary to hyperventilating celebrities, it is not an existential threat. In many ways, the good will balance the bad. But the left is utterly dependent on terrorizing children into believing they have no future to advance its agenda.
It is not enough for the left to disagree with Trump and his supporters, or to call them out on a stupid ploy to delay the certification of the election in hopes the courts would allow them to flip some states, they have to be fascists intent on destroying “democracy” even though many of them are patriots who have or would fight to defend the country.
Everything has to be a hobgoblin coming to eat us in our beds. Nothing can be a problem we can solve working together. Everything has to be the end of the world.
Unless, of course, we give them extraconstitutional power to take control of everything.