(Reuters) -The U.S. Justice Department on Thursday launched a probe into whether Oklahoma, Oklahoma City and the city’s police department discriminate against people who have mental health disabilities in the provision of behavioral care services. The investigation will examine if Oklahoma violates federal law, including the Americans with Disabilities Act (ADA), by relying on psychiatric institutions to serve adults with behavioral health issues rather than relying on community-based services offered to others, Assistant Attorney General Clarke said at a news conference. The ADA requires stat…