The Bieber may outdraw the Beatle: The Mexico City organizers of Monday's free concert by teen star Justin Bieber predict it could be even bigger than Paul McCartney's May 10 concert in the city's central plaza, which attracted some 200,000 people. One thing's for sure: Officials are planning elaborate security arrangements for the event, with nearly 6,000 police officers, two helicopters, 500 portable toilets, and four rings of barriers.
Checkpoints will limit the crowd in the plaza to about 80,000, with other fans directed to watch the concert on giant screens erected on neighboring streets. A recent performance by McCartney in Bogota, Colombia, was guarded by a comparatively paltry 1,400 cops. (Read more Justin Bieber stories.)