Most people you meet on the street are idiots. The majority of Americans are poorly educated morons who barely have the brainpower to tie their shoes. They walk around in a daze and do whatever the media tells them. You go up to any group of people on the street and ask them a series of questions about any subject from history to world politics and 80 % of them will get them all wrong.
Of course, not just Americans; all people everywhere pretty much.
It's because we turned off the whole survival of the fittest thing. Now even the feeblest of people who, in the old days would have naturally weaned themselves out of our gene pool, are happily surviving and breeding thanks to modern science. The side effect being that as time progresses, the general population gets weaker and stupider, and the smarter people will help it along, because when overpopulation gets out of hand the smarter people will start to limit themselves to one or two children, while the idiots of the world will keep on having as many children as possible. Soon the world will be a writhing mass of rampant idiocy, illiteracy, and down right stupidity.