The consequences of leftism and it’s attraction to evil.
It's a bit like the final scene of La Dolce Vita, in which the people, sick with decadence, find some monstrous thing washed up on the beach--evil--and they can't figure out what it is, and there is an angel calling to them; they can see her, but they can't understand what she's saying.
The evil--the corruption, the decadence, the untruth--all of which is "the left," i.e. the Democrat Party and its fellow travelers--is overwhelming and destroying America, and millions of Americans are willfully blind to what's happening. They cannot escape blame; they have allowed themselves to be misled.
It's also very much like Germany of the 1930's, when the German People lost their way and allowed the horrifying, evil of the Third Reich to overwhelm them.
America's corrupt, self-serving politicians, willing to sell America and every US citizen to the highest bidder, are to blame, but they are not the only ones to blame. Every single person who co-operates with them and fails to oppose this evil shares the blame.
Worth repeating.