The gun control debate has been at fever pitch for several years now, and as things fail to change the stats get grimmer. The New York Times reports that there have been 239 school shootings nationwide since the 2012 Sandy Hook Elementary school massacre, where 20 first graders and six adults were killed. Six years later, 438 more people have been shot in schools, and for 138 of them it was fatal. Here, journalist and author Kurt Anderson reads the Second Amendment, and explains its history from 1791 all the way to now. "What people need to know is that the Second Amendment only recently became such a salient amendment," says Andersen. It's only in the last 50 years that the gun debate has gone haywire, and it was the moment the NRA went from reasonable to absolutist. So what does the "right to bear arms" really mean? What was a firearm in the 1790s, and what is a firearm now? "Compared to [the] many, many, many rounds-per-second firearms that we have today, it’s the same word but virtually a different machine." Kurt Andersen is the author of Fantasyland: How America Went Haywire.