MILWAUKEE (AP) – A 39-year-old man is dead and a second person is in critical condition after a hit-and-run on the south side of Milwaukee.  Police say the two victims were crossing the street just after 10 p.m. Saturday when a white GMC conversion van with a ladder rack on top struck them.  Police are searching for the van, which should have front-end damage. Anyone with information about the van or the hit-and-run driver is asked to call the Milwaukee Police Department.  The names of the victims were not immediately released.