Mexican police killed three trainee teachers, shot another in the head and another in the face, and herded dozens more into police trucks to what investigators fear was a massacre on a remote hillside, survivors of the incident say.
Pro-democracy protesters in Hong Kong agreed with the city's government late on Tuesday to start formal talks later this week to address concerns that have brought tens of thousands of people onto the city's streets.
Twitter Inc (TWTR.N) sued the U.S. Department of Justice on Tuesday, intensifying its battle with federal agencies as the Internet industry's self-described champion of free speech seeks the right to reveal the extent of U.S. government surveillance.
Missouri authorities are drawing up contingency plans and seeking intelligence from U.S. police departments on out-of-state agitators, fearing that fresh riots could erupt if a grand jury does not indict a white officer for killing a black teen.
