Keller @ Large: 'We're Right, You're Wrong' Dialogue Must End

BOSTON (CBS) - The speakers at Tuesday's memorial service for the slain Dallas police officers had a common theme – community unity, and the need to move past racial, social and political divisions.

One memorable line came from former President George W. Bush. He took on the blame game over the police shootings and civilian killings by police, noting: "Too often we judge other groups by their worst examples, while judging ourselves by our best intentions."

I took that as a reference to the degraded public dialogue we live with, where one protester out of a hundred chants vile threats against cops and suddenly they're all a bunch of thugs, or one cop out of thousands degrades his badge with brutality and they're all a pack of racists.

After Bush spoke, President Obama, who's been criticized by some for an alleged lack of concern with police safety, delivered a heartfelt eulogy for the slain officers, in which he called their murders an act of "racial hatred."

But this wasn't enough to win him some slack on the internet, where he was instantly jumped on for being "nakedly divisive" by making a reference to guns in his remarks.

When he was in office, Bush could have read aloud from the Bible and some on the left would have called him an idiot for doing so.

Now it's Obama's turn to be slimed by what Bush correctly identifies as a culture of reactionary narcissism, where you and yours are always right and all others are dirtbags.

This is a page in the history of our political culture that we cannot turn soon enough.

Listen to Jon's commentary: