Die-ins, like this one at Union Station in Washington, D.C., on Dec. 6, were conducted across America to protest grand jury decisions not to indict the police officers who killed Michael Brown and Eric Garner. Linguist Ben Zimmer says that while the word "die-in" isn't new, its increased use makes it a strong candidate for the American Dialect Society's 2014 Word of the Year. (AFP/Getty Images)
