Is this why political discussions become bitter arguments?

It seems to me that during my lifetime, much of American society has lost the ability to discuss controversial issues without getting highly emotional and storming off in a huff. This article presents some ideas on why that might be.

American Thinker Blog: Free speech is unfair to losers:
"James Lewis
Several of my liberal friends have a funny conversational tic: Whenever the talk wanders into certain topics, they abruptly switch off --- change the subject, or urgently go off to do something else. We're friends, so I never try to push them back to that dangerous little 'Eeeek!' moment. But it's just as if they have a little thermometer in their heads, and when things get dangerous, the red line goes way up and all that mercury threatens to squirt out of the top. You can practically see it happening right in front of your eyes.

That's what Sigmund Freud called 'signal anxiety' --- or mentally going 'Eeeek!' --- there's danger up ahead! Don't let your thoughts run that way! Because, of course, liberals are horribly afraid that they might be wrong --- about abortion, or the war, or whatever secret doubts they harbor in their hearts. It's why they have to shout so loud to drown out other voices.

All that is tremendously ironic. The Left has controlled the media at least since the 1970s, and actually even back to the 1930s. As a result of their monopoly they have lost the ability to compete intellectually --- to persuade by logic and evidence. Instead, they think that just stating their often bizarre and simply false opinions is good enough. But it's not. It is the conservatives who have been forced to think hard, to justify their ideas over and over again. Practice makes perfect, and many (not all!) conservatives have now become very skilled in stating their case to the American public. Liberals are thrown back on using personal insults, because they no longer know how to state their case; and they are afraid to think freely, for fear they might have to change their minds.

When people become afraid of following a thought to its logical conclusion, they can no longer think.

Free speech is unfair to intellectual losers. That's why the "Fairness Doctrine" is raising its Medusa head again. Liberals want government-enforced equality because genuine intellectual opposition scares them. Quick, turn on NPR! (Phew, that was a close one!)

The fear of free speech is the fear of skepticism. All stagnant orthodoxies fear doubters, just as Pope Leo xxx feared Galileo, --- who was a feeble old man when he was sentenced to compulsory silence. It's interesting that the censorious Pope was a close friend of Galileo, and he may have privately agreed with him. But as Pope, he protected the Church of Rome by silencing the greatest scientist of the age. The Church has paid the price for its censorship ever since."

Emphasis added.