If nations can suffer from cognitive dissonance just as individuals can, it’s easy to see why we elected Donald Trump.

A good place to start thinking about this is football:

As I often do in late summer, I was considering chronic traumatic encephalopathy when a shooting spree in Manhattan left four dead and a fifth critically injured. The shooter, Shane Tamura, killed himself, as well.

Tamura, a former high school football player, left a three-page note blaming the National Football League for prioritizing profits over player health and blaming his behavior on his CTE. His apparent target was NFL headquarters.

The details haven’t been confirmed: CTE can be definitively diagnosed only by a brain dissection after death. But Tamura believed he was suffering from CTE. As other CTE suicides

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