Well it appears this loose nut didn't just drop himself into the gears by himself. There has been a long term well organized plan at the highest levels of governments, religions (Islam), and progressive political parties to place "the nut" where he can do the most damage to America and the world.
Stupid? Not the brightest for sure. Evil? Obviously. Delusional? Absolutely.
In fact, he did virtually none of it by himself. His contribution to the effort was to show up and look "black." The News and Entertainment Media, the Chicago Mafia, and Big monied Liberal Donors did the rest. Oh, and foreign interests. Let's not forget those.