By William CrumStaff writer wcrum@oklahoman.comPolice were caught off guard when a racial-justice demonstration escalated into an hours-long confrontation in front of police headquarters last year, according to a Police Department review of the response. Thirty-six hours of peaceful demonstrations punctuated by civil unrest occurred May 30-31 in Oklahoma City, following the death in Minneapolis of George Floyd, a Black man who died after a police officer knelt on his neck.Read more on NewsOK.com