It's a big year for America. It's the semiquincentennial, otherwise known as America250, and the United States is cohosting the World Cup. But spectators at these events - and the millions of people who live in the cities hosting them - may not realize that they, too, are being watched.
From Kansas City to New York, the US cities hosting the World Cup have been ramping up their surveillance capabilities in the months leading up to the tournament. Security measures are at an all-time high in Washington, DC, which isn't hosting the World Cup, but is home to a series of spectacles this summer. The Fourth of July festivities in the nation's cap …