The world would be amiss if it weren't for the much-hated, always outspoken Grammar Nazi. Entire offices would run amok, restaurants would try to sell children, and apartment buildings would likely erupt into violence on a weekly basis -- all because bad grammar was allowed to stand uncorrected. Here are 28 of the greatest examples of spontaneous Grammar Nazi intervention; if you see the a violation in your area, don't hesitate to emulate these fine heroes.