Beware of the Brown Note. That's the word among some political activists as the Democratic National Convention nears. As legend has it, the Brown Note is an infrasonic frequency believed to resonate through human body parts and cause a loss of bowel control. Some protesters are convinced that Denver police will amplify such low frequencies to subdue them in August. "They'll bring out all the technologies they can get their hands on," says activist Ben Yager. "I wouldn't put anything past police in terms of crowd control." Sounds paranoid? Maybe. But Mayor John Hickenlooper's administration is only fueling conspiracy theories...