Was Keith Lamont Scott killed for simply expressing his right to open carry?

One heck of an article, very sobering. North Carolina is an open carry carry state. Gregory Wallace, a law professor at Campbell University in Raleigh, asserts the police had no right to detain Scott (let alone order Scott to drop his weapon) for simply observing that he had a gun. conclusion is based on a skeleton of facts. As more information and facts come to light, this argument will be validated or invalidated. If this man's gun ownership rights have been violated, I look to the NRA, an organization that I'm a lifetime member of, to defend not only his rights but by extension my and your rights.