You may already be familiar with Improv Everywhere. Improve Everywhere is a New York City-based prank collective that causes scenes of chaos and joy in public places. Created by Charlie Todd, Improv Everywhere has executed over 100 missions involving tens of thousands of undercover agents.About this prank: They constructed a…custom wooden lectern with a megaphone holster and an attached sign that read, “Say Something Nice.”The lectern was placed in public spaces around New York and then left alone. They wanted to see what would happen if New Yorkers were given the opportunity to amplify thei