Socialism is the only way to stop liberalism from proceeding to fascism. If the liberals had supported the socialists instead of demanding the socialists vote for them while they create the conditions for fascism to grow, and then hand power to the fascists, we could have strangled it in its crib.
It was as true in the 1920s and 30s as it is today. Hell we even saw the dems choose to fund ICE year after year, after they built the first set of cages, and right now, today, are choosing not to block its massive expansion.
And you have any faith at all that those same people have any interest in stopping fascism?