Sophisticated throwbacks will quote failed professor Herbert Marcuse, whose gymnastics on the subject of tolerance were legendary. He wanted to think he was tolerant, without actually having to tolerate other opinions or attitudes.
This is the same bunch that complains about "oppression" today on college campuses: but they point the wrong way. They are oppressed by their professors, who coddle them rather than educating them. They are not taught to defend their opinions, but instead taught to complain that people don't agree with them, and to suggest that if the person hearing them was respectful, they would not criticize the manifestly incoherent premises, but instead criticize themselves as listeners. The resulting purely emotional rants can be accidentally funny.
"Tolerant Liberals" is an oxymoron. Prove me wrong.