Crutcher was seeking help after his SUV stalled in the middle of the road as he was returning home from a community college class, his family told KOKI-TV.
According to Tulsa police, Crutcher failed to obey officer commands and approached an officer who arrived at the scene.
"We have got to tackle systemic racism," Clinton said. "This horrible shooting again. How many times do we have to see this in our country?
Related: Video shows Terence Crutcher had hands up before police shooting
"This is just unbearable and it needs to be intolerable. And maybe I can, by speaking directly to white people, say, 'Look, this is not who we are.'" Clinton said. "We have got to do everything possible to improve policing, to go right at implicit bias.
"There are good, honorable, cool-headed police officers. We've seen them in action in New York over the past 48 hours because of the terrorist attacks. We can do better. We have got to rein in what is absolutely inexplicable, and we've got to have law enforcement respect communities and we have to have communities, respect law enforcement because they have to work together."
The shooting is under investigation by the U.S. Department of Justice.
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