In "Harrison Bergeron" by Kurt Vonnegut, Jr., everyone has finally been made equal in every way. Nobody is smarter than anybody else; nobody is more athletic or beautiful or anything. In this society, those who are naturally better at anything have to wear some sort of handicap to even the playing field among the citizens. A Handicapper General is in charge, and her agents go about their days making sure no one is in violation of the policy.
People who are more intelligent than average are required to wear a mental handicap radio in their ear. Harrison's father, George, has one of these devices. This earpiece connects to a transmitter from which the government sends out a loud noise every twenty seconds. This is done so that people like George cannot think about anything for very long.
"Every twenty seconds or so, the transmitter would send out some sharp noise to keep people like George from taking unfair advantage of their brains."
Harrison is so highly intelligent that he is forced to wear large earphones and strong, blurry glasses that give him terrible headaches and make him almost blind.