CHARLOTTE, N.C. - Nearly a week of protests over the police killing of a black man in Charlotte, North Carolina showed no signs of abating on Sunday, after police released videos showing the victim being shot but did not answer the question of whether he had a gun.Hundreds marched through the center of Charlotte on a fifth night of demonstrations that stretched into Sunday morning, including white and black families protesting police violence.One sign read "Stop police brutality" and another showed a picture of a bloody handprint with the phrase #AMINEXT, a social media tag about the fear of becoming a victim of police.For the first time in three nights, police enforced a curfew, saying they would arrest violators. A crowd gathered outside police headquarters dispersed without any violence shortly after midnight.Charlotte police released two videos on Saturday showing the fatal shooting on Tuesday of Keith Scott, 43. The controversial death has made Charlotte, North Carolina's largest city and a financial center, the latest flashpoint in two years of tense protests over U.S. police killings of black men, most of them unarmed.Charlotte-Mecklenburg Police Chief Kerr Putney acknowledged that the videos themselves were "insufficient" to prove that Scott held a gun but said other evidence completed the picture."There is no definitive visual evidence that he had a gun in his hand," Putney said. "But what we do see is compelling evidence that, when you put all the pieces together, supports that."Police said officers trying to serve an arrest warrant for a different person caught site of Scott with marijuana and a gun, sitting in a car in a parking lot."They look in the car and they see the marijuana, they don't act. They see the gun and they think they need to," Putney said.Both Scott's family and protesters have disputed the police statements that Scott was carrying a gun.Police released photos of a marijuana cigarette, an ankle holster they said Scott was wearing, and a handgun, which they said was loaded and had Scott's fingerprints and DNA.But Scott's family, which released its own video of the encounter on Friday, said the police footage showed the father of seven was not acting aggressively and that the police shooting made no sense, with no attempt to de-escalate the situation. The family video, shot by Scott's wife, was also inconclusive on the question of a gun.