police shooting african-americans in tulsa. >> this is not where we should be. >> reporter: the major refused to apologize. travis yates said that he meant systemic policing and racism doesn't exist he said it is our sin nature. he said that he stands by his comments and added he was quoting research. last week tulsa police were criticized when they arrested a black teenager and handcuffed another for jay walking on a street that had no sidewalks. >> why are you putting handcuffs on him? all he was doing was jay walking. then you have to do that. >> it all comes against the backdrop of a horrible moment in history that tulsa has never recovered from. in 1921 a white mob massacred hundreds of black residents of tulsa, torched several businesses and homes. the terrifying act depicted in