MINNEAPOLIS — Four men were being held on Wednesday by Minneapolis police as prosecutors weighed charges against them in connection with the shooting this week of five demonstrators. They were protesting the fatal police shooting of an unarmed black man. Allen Lawrence Scarsella, 23; Joseph Martin Backman, 27; Nathan Wayne Gustavsson, 21; and Daniel Thomas Macey, 26, have been arrested and will be held until Monday as the Hennepin County Attorney’s Office investigates the incident and decides whether to file charges, officials said. The man are accused of shooting people demonstrating against the fatal shooting on Nov.