The document summarizes various topics in 3 sentences or less each: The ULFA was formed in Rang-Ghar in Assam and its logo features the man behind it, Arabinda Rajkhowa, who was recently arrested. A 1973 police photo from Stockholm originated the term "Stockholm Syndrome". One of Google.cn's images for the "Tiananmen massacre" shows tanks and corpses. Randall Munroe worked with NASA and includes references like Sierpinski, Erdos and Feynman in his xkcd comics, which often feature themes of Firefly, velociraptors and red spiders.