As millions across the world watched on TV, more 17,000 of Michael Jackson's fans, family members, and friends gathered to pay their respects to the King of Pop today during a public memorial service at Los Angeles' Staples Center.

But one "goodbye" stood out among the rest.

Eleven concertgoers were killed over the weekend after a fence collapsed at a music festival held in the Moroccan capital of Rabat. The event featured performances by Kylie Minogue, Stevie Wonder, and Alicia Keys.