Steve, for years "liberals" here have been bombarded with facts on many different subjects, they start off in debate but whenever they find themselves unable to find a sensible response, they retreat into either outright abuse in an attempt to have the thread shut down, or into a faux humorous dialogue between themselves which usually has no bearing on the subject under discussion.
This of course is a tactic to derail the discussion, their expressed "offence" is another tactic which demands discussion be curtailed.

I has become clear to me over the years, that "liberals" in general do not like to hear inconvenient facts, all their views are strongly based on how they think the world should be, not how it actually is.

Why do conservatives not suffer from this affliction? I can only suppose that their views are built on more sturdy foundations.
The media must share a large part of the blame as "liberal" views are propagated constantly to huge sections of the community by misinformation, quoting out of context and a warped view of morality.