"Harrison Bergeron" by Kurt Vonnegut, Jr., is an absurd science fiction satire that proposes a society in which the government mandates equality for everyone. The 211th, 212th, and 213th Amendments are the legal justifications that Vonnegut gives for the draconian measures that society imposes upon exceptional people.
The year was 2081, and everyone was finally equal. They weren't only equal before God and the law. They were equal every which way. Nobody was smarter than anyone else. Nobody was better looking than anybody else. Nobody was stronger or quicker than anybody else. This was all due to the 211th, 212th, and 213th Amendments to the Constitution, and to the unceasing vigilance of agents of the United States Handicapper General.
What the 211th, 212th, and 213th Amendments achieve is a sort of pseudo-legal rationale for all the crazy things that government agents do to keep people equal. For instance, Harrison's father, George, because he has exceptional intelligence, has a sound transmitter in his ear that periodically blasts him with loud noises so that he is unable to think better than anyone else. Ballerinas on TV have face masks and are weighed down with sash weights and birdshot so that they can't dance well or appear exceptional. Harrison himself, a genius and athlete, has a large pair of earphones, spectacles with thick wavy lenses, scrap metal weighing him down, and a number of impediments meant to disguise his good looks, including a red rubber ball over his nose. Ultimately, the 211th, 212th, and 213th Amendments justify the extreme measure at the end of the story, when the Handicapper General murders Harrison Bergeron and the ballerina he dances with in order to restore societal equality.