Owners of the Chicago's Little Lady tour boat are the latest to file a civil lawsuit against the Dave Matthews Band, claiming human waste from the rock band's tour bus was emptied from a downtown bridge into the Chicago River --right in the path of the watercraft. Children, senior citizens, persons with disabilities and a pregnant woman were drenched by the "foul-smelling, brownish-yellow liquid" in the Aug. 8 incident, according to a suit filed by the vessel's owner Wednesday in Cook County Circuit Court. Mercury Skyline Yacht Charters Inc. is seeking compensatory damages in excess of $50,000 and punitive damages...