We know that Omar Mateen planned an attack on the Pulse nightclub in Orlando. We know he used a pistol and an AR-15 rifle—which he purchased legally– to shoot over a hundred people, leaving  50 people dead and 53 injured. We know he was homophobic, that the FBI interviewed him three times,  and that he had pledged his allegiance to the Islamic State as his deadly assault began. We know that  his father is a pro-Taliban, anti-American activist. We know that the shooter’s  co-workers noticed that he was unstable, but that his bosses were reluctant to take any action for fear of appearing “racist.” We will Mateen’s ex-wife says he was prone to violence and that she believes he was mentally ill.

We will undoubtedly learn more. Still, that’s a lot of data. Isn’t it possible to objectively, dispassionately weigh and measure causes and effects and come to fair and reasonable conclusions that can guide policy without partisan gridlock?

It is possible to at least try, but so far, pundits, elected officials and activists aren’t trying. They are allowing confirmation bias to dominate their thoughts; what matters isn’t what caused this tragedy, but what they want to believe caused it.

To arch conservative pundit Michael Walsh, for example, the problem is that the United States allows Afghanis and Muslims to be citizens:

Ah, Afghanistan, the land of sexually primitive boy-molesters who channel their aggression into wife-beating and mass murder…That’s par for the course for marriages to Muslims, as many real American women who’ve married one of them knows. Flowers, limos, candy… and the second after the vows, domestic prison and beatings for life or until they can escape….The Florida shooter is Exhibit A why the notion of “birthright citizenship” — he was an Afghan Muslim who by sheer chance was born in New York — needs to be drastically curtailed in light of changed circumstances.

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