'You filthy, abnormal animal’: graphic contents of anonymous letter sent by FBI to Martin Luther King Civil rights leader was urged to kill himself over ‘sexual orgies' with 'evil playmates'

http://www.telegraph.co.uk/news/worldnews/northamerica/usa/11226618/You-filthy-abnormal-animal-graphic-contents-of-anonymous-letter-sent-by-FBI-to-Martin-Luther-King.html