Curious, that. How most of the Western left aligns in practice with liberals against those trying to build socialism.

Every revolution that survives is attacked and slandered. There'll never be a socialism capitalists won't attack, because it's in their class interests to make everyone hate and fear it.

Ultra-leftism is harmful too. Attacking something for not being perfect doesn't help. Someone like Trotsky would've destroyed the USSR, but instead he's treated as a martyr (happens with every socialist who doesn't succeed in posing a big threat to capitalism) because he joined forces in fighting against it, and they had to take harsh measures against the internal opposition. It existed irl, so naturally it wasn't a utopia.

Then there's the anarchists who were like "all states are bad let's destroy the socialist ones first!"