Oklahoma police departments are using the police killing of a black man in Minnesota as a “teachable moment” to illustrate proper use of force and police-community relations.“I think everyone in the country has seen this video,” said Russ Landon, deputy chief of the Village Police Department. “We were extremely discouraged and disappointed by what we saw.”Landon said the viral video has sparked emotions and dialogue within his department. And just because his department is small doesn’t mean it doesn’t face many of the same issues and scenarios as its big-city counterparts. "Even at a small department like the Village, we still take over a thousand calls for service every month and some of those do involve uses of force,” he said. Landon said officers find themselves in situations where use of force is necessary, but they’re trained to always try to de-escalate the situation. "Once a person is in custody, handcuffed, no longer a threat, the use of force is no longer justified," he said.Also, he said, uninvolved officers are required by state law to intervene when they see something improper happen. “There's no excuse now to stand by now and say, ‘Hey, I'm not the one using the force,’” Landon said. Landon said his officers go through mandatory training throughout the year and continue to work to bridge the gap between law enforcement and the community.“That’s our No. 1 goal,” he said.