USA

Angered by the acquittal of three New York detectives in the shooting death of an unarmed strip club patron, hundreds of people marched through Harlem Saturday, led by the Rev. Al Sharpton, who called for closing down the city with "massive civil disobedience." Two of the officers are black, as was victim Sean Bell, but the case inflamed racial tensions linked to perceptions of police misconduct. Above, protesters held signs representing the number of bullets fired.

Seismologists continued to keep a close eye on Reno, Nev., where 100 aftershocks have been felt since a magnitude 4.7 earthquake was recorded Friday, the strongest since 1953. Scientists say the rumblings, which began two months ago, have grown stronger, a reversal of the normal pattern. Friday's quake caused no known injuries or major damage.

Seventeen miles of San Diego County coastline remained closed Sunday two days after a shark fatally attacked triathlete David Martin while he was swimming off Solana Beach. Subsequent helicopter patrols turned up no signs of great white sharks, which are rare in southern California and usually prey on seals or sea lions.

Attorneys for John Demjanjuk, a retired Cleveland autoworker and accused Nazi death camp guard, have appealed his deportation to Germany, Poland, or his native Ukraine to the US Supreme Court.

Sen. Hillary Rodham Clinton (N.Y.) challenged presidential candidate, Sen. Barack Obama (Ill.) Saturday to a Lincoln-Douglas- style debate that would allow the Democratic presidential candidates to go toe-to-toe for 90 minutes without a moderator. Clinton proposed the idea while campaigning in Indiana, which joins North Carolina in holding its primary May 6. Obama aides said they were studying the proposal.

The National Collegiate Athletic Association has recognized 11.4 percent of its 6,272 Division I teams for their latest multiyear Academic Progress Rate scores, which are based on the academic eligibility, retention, and graduation of student-athletes.

Using prosthetic limbs, John Fernandez, who lost parts of both legs from a friendly-fire bomb in Iraq in 2003, played Saturday for Army in the Heroes Cup Army-Navy alumni lacrosse game at New York's Madison Square Garden.