We have elevated gun lust to a religion in this country.

[AdHocSolver]

43. Humans are a violent species that subscribes to a culture of violence.

Vulture capitalists destroy people's livelihoods for profit. That is violence.

Banks and Wall Street steal people's savings for profit. That is violence.

Medical insurance companies deny affordable health care to millions of Americans. That is violence.

All the wars fought around the globe over the millenniums for profit or to defend religious ideology. That is violence.

Moreover, there is slavery, the mistreatment of women and minorities, "school yard" (or work place) bullies, "road rage", and more.

Something to consider: Why did the U.S. spend hundreds of billions of dollars on a war in Iraq to get their oil when the U.S. could have bought the same oil for one-tenth the amount of money without all of the destruction?

One answer is the need for those who profit from violence to stir up fear and hatred in the useful pawns that those in power use against the victims of violence. The right wing media is a powerful propaganda tool for this purpose.

The shooter sounds like someone who exploded at a minor irritation because he is a frustrated individual with pent up hostility at others who frustrate him, but against whom he dare not complain, so he vented at the teenagers who were not in a position to defend themselves.