NEW YORK (AP) _ A federal appeals court gave the go-ahead Wednesday for another Million Youth March in Harlem, turning aside city officials who feared a repeat of the violence that erupted at the end of last year's rally.

Mayor Rudolph Giuliani said four federal judges involved in two rulings allowing the rally ``have the luxury of keeping their heads in the sand.''

``Thank goodness they don't have to govern a city because things would be really dangerous,'' Giuliani said.

Giuliani's comments came after the city failed to stop a rally that organizers expect will attract 20,000 people Saturday.

The mayor charges the event is a thinly disguised hate march promoting violence. But rally organizers said the event would focus on opportunities for black and Latino youths to make a better world by educating themselves and challenging their government to act fairly and responsibly to everyone.

Last year, 28 people were injured, including 16 police officers, when chairs and bricks were tossed through the air as an army of officers moved in to shut down the rally at the 4 p.m. deadline. An estimated 6,000 people attended.

But the 2nd U.S. Circuit Court of Appeals sided with the Million Youth March for a second straight year, finding that organizers event had a First Amendment right to proceed.

The court warned the city not to police the rally with ``undue rigidity,'' only taking forceful action if it becomes apparent when the event concludes that the crowd is not leaving.

``We're quite happy,'' said Roger S. Wareham, a lawyer who filed the lawsuit on behalf of the organizers, after the appeals court ruled Wednesday.