CHAPEL HILL, N.C. — Supporters of seven people charged Sunday with breaking into an unoccupied building in downtown Chapel Hill on Monday denied the allegations of a break-in. Police said more than 70 attendees from an anarchist book fair broke into the former Yates Motor Co. building, at 419 W. Franklin St., on Saturday. Police monitored the group until the crowd reached a more manageable size, and then a tactical team moved in late Sunday and arrested seven people.