The US is not the only country with a high rate of gun ownership, but nowhere in the world does gun ownership intersect with random violence so often as in the US.
The 1% are to blame. As they hog more and more of the nation's resources and wealth, those young men who are at the age when they are trying to establish themselves in life find they are marginalized in a society that offers too many of them only meaningless minimum-wage work and a dismal future.
I know that many here at DK will favor draconian gun control laws. The problem is that the US has almost as many guns as people, many of them "off the books" through being passed down intergenerationally, or acquired before local registration went into effect.