This is a serious question.
Myself, I believe that it is.
Most liberals that I know will cling to their beliefs like they were the gospel itself.
They see anyone who does not agree with them as an infidel who needs to be either converted or silenced.
Instead of praying to Jesus and reading the Bible, they worship Marx and read the Communist Manefesto.
The liberal way of thinking is not a reasoned way of thinking. It is a faith.