Tulsa Police watch as a group of protesters block Denver Avenue near the Tulsa County Courthouse following the not guilty verdict in Betty Jo Shelby's manslaughter trial in Tulsa, Oka., Thursday, May 18, 2017. Oklahoma's Republican Gov. Mary Fallin has called for calm after a jury on Wednesday found a Tulsa police officer not guilty in the fatal shooting of an unarmed black man, Terence Crutcher, last year.
Tulsa Police watch as a group of protesters block Denver Avenue near the Tulsa County Courthouse following the not guilty verdict in Betty Jo Shelby's manslaughter trial in Tulsa, Oka., Thursday, May 18, 2017. Oklahoma's Republican Gov. Mary Fallin has called for calm after a jury on Wednesday found a Tulsa police officer not guilty in the fatal shooting of an unarmed black man, Terence Crutcher, last year.