Scores of pro-choice activists, including a huge array of Hollywood superstars, have thronged into the capital for a march Sunday billed as the largest demonstration ever in favor of abortion rights.

"Tomorrow is only a beginning," declared Molly Yard, president of the National Organization for Women. "It is a statement to President Bush and to the Supreme Court that the women of this country are not going back."At a news conference attended by dozens of show business personalities, Yard added: "At last the majority of this country is going to stand up for our rights to control our reproductive lives."