These guys are socialists, not liberals. The word 'liberal' has been misused and maligned for too long.
Liberalism stands for open markets, liberal democracy abroad, and individual autonomy at home. It does not stand for being anti-war, a USSR-style government command economy, or social engineering. For example, consider the subject of war. John Stuart Mill, a liberal, once wrote that
"War is an ugly thing, but not the ugliest of things. The decayed and degraded state of moral and patriotic feeling which thinks that nothing is worth war is much worse. The person who has nothing for which he is willing to fight, nothing which is more important than his own personal safety, is a miserable creature and has no chance of being free unless made and kept so by the exertions of better men than himself."
As per the Venona files, liberal is code for commie.
As per this photo and Stalin's Industrialation project, socialism is code for commie.
Any other definitions, as far as I'm concerned, is just intentional confusion.
The Victory of Socialism in the Soviet Union (1925-1941 )