NEW YORK — The line at the Thurgood Marshall United States Courthouse in lower Manhattan begins in the dead cold of night, with a handful of men, shivering under blankets or umbrellas, huddling sometimes in a nearby parked car to keep warm in the wee hours of the morning. The line-sitters, as they are called, earn $30 to $50 an hour for holding a place in line from 2 to 7 a.m. for those who can afford it — mostly journalists, but some members of the public — to guarantee themselves a seat in the courtroom where British socialite Ghislaine Maxwell is on trial, charged with sexual trafficking. T...