So let's review. Trump's presidency has exposed him as grossly incompetent and corrupt. He gets the Russians to help in his campaign, he fires the FBI Director for opening an investigation into that matter. His NSA Director lies to the FBI and admits such in court, then Trump puts him above the law, Trump cages kids, calls neo-Nazis 'very fine people, extorts Ukraine, ignores warnings of bounties on our troops, mismanaged a pandemic and gasses peaceful protesters for the sake of a photo op.
And, as a result, he is less popular than ever with four months till the election. What's he to do?
Double down on culture wars by being overtly racist.
And the racists eat it up by the spoonful. Black Lives Matter and you mouth breathing, hood wearing racist idiots take it as an insult.