Many of us see the socialist left as the end of the United States as founded. We see it as the end of any kind of protection of our rights as free individuals. There will be no limited government, as the government will be all-powerful to do anything it wants to us. (The clear limitations on Federal power in the Constitution have long since been ignored.) Add to this, if Joe Biden does everything he promised, which I doubt, it will lead us to financial ruin.
For these reasons, many of us looked to Donald Trump as a kind of savior figure to resist the possibly inevitable tide of ever excessive government. There is a reason why Trump supporters are so dedicated to this man.