A man who allegedly came to the federal courthouse Downtown Monday to express "concerns about the government" returned Tuesday with a baseball bat. He was fatally shot by law enforcement after threatening people with a baseball bat and injuring at least one person, police said.The man was identified by the county coroner as 55-year-old Ricky Ard.A security officer inside the courthouse called 911 at 11:18 a.m. Tuesday to report a man armed with a baseball bat was refusing to leave the grounds of the Winfield K. Denton Federal Building at 101 N.W. Martin Luther King Blvd.