In this This Day in History video, take a look at May 30, the day in 1431 when Joan of Arc was burned at the stake for heresy, the day in 1971 when NASA launched the space probe Mariner 9, and the day in 1989 when Chinese students were protesting at Tiananmen Square.
In 1890, medium Helen Peters helped give the Ouija board its name. But after the board accused a relative of theft and tore her family apart, she spent the rest of her life warning others that its answers might not be truthful.