Tens of thousands of Belgians gathered in the heart of Brussels today, waving white balloons and white flowers in a popular outpouring of anger and frustration over a widening child sex scandal. The White March," as it was called by organizers, was one of the largest in the country's recent history, drawing some 275,000 Belgians. It capped a week of spontaneous protests that erupted after Belgium's highest court removed a magistrate widely seen as a hero in the scandal, Jean-Marc Connerotte, from investigations into a pedophile and child pornography ring. So far, 13 people have been charged in the case, which involves the kidnapping, sexual abuse and killing of several children, with at least seven young girls still missing. The court ruled that Mr. Connerotte had compromised his impartiality by accepting a free dinner at a fund-raiser for the parents of missing children. The ruling prompted the public ... to take to the streets. The dismissal also followed press reports that Mr. Connerotte was on the verge of disclosing the names of senior government officials who had been recognized on confiscated videotapes, and during allegations of a high-level cover-up. The march was intended not only as a protest ... but also as an expression of sympathy with the victims of a gang reportedly led by a convicted child rapist, Marc Dutroux, one of the 13 charged. He was released 10 years early in 1992 from a 13-year sentence for multiple child rape. Scores of videos with child pornography were seized along with him.