Protesters defy curfew in Ferguson

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Police enforced a curfew against protesters angry at the shooting death of a black teenager by a white police officer in Ferguson, Missouri, clearing the streets of demonstrators early on Sunday during a tense standoff.

"You must disperse immediately," a law enforcement official warned over a loudspeaker as police slowly moved down the street where dozens of demonstrators remained after the curfew took effect at midnight local time.

Officers were equipped with gas masks and full-length shields, standing among armored vehicles.

A short time later, officers began firing cannisters toward the crowd, which a state Highway Patrol spokesman said dispersed smoke, not tear gas. But St. Louis alderman An