The left hates America to the extent that America resists socialism.
The American left is in a uniquely awkward spot in that America’s founding is pretty explicitly hostile to leftist ideas. That’s not the case for a French leftist or a Greek leftist or a Rhodesian leftist or a Mexican leftist or any other kind of leftist.
American leftists are uniquely at odds with their nation’s core ideas.
The lefties hate America and hate them selves. Their self-loathing unfortunately does not lead them to end their existence. It only leads to them trying to make everyone else as equally as miserable as they are.