It`s direct from Marx`s Communist Manifesto. That is where the left has taken it`s cue, crush tradition, remake society in your image and rule by majority in perpetuity.
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Marx, “ Abolition of the family ! ... The bourgeois family will vanish as a matter of course...we destroy the most hallowed of relations, when we replace home education by social ( govt. )... The bourgeois clap-trap about the family and education, about the hallowed co-relation of parent and child, becomes all the more disgusting...”
In other words, it is less acceptable in polite society to be a McCarthyite than to be a communist. In 2008 both leading candidates for the Democrat nomination for President of the United States of America were disciples of the communist Saul Alinsky and that illuminating fact was considered unremarkable by the establishment media.