A man called the police, claiming that he was put down to the ground by the company's staff inside a company's building. No one is directly witnessing the action but one surveillance camera, which belongs to the company.
The senior manager comes out and make sure that everyone on the floor, including a few other clients, tells the police that no one put down anyone.
The policemen come and asked several witnesses. Some company's members reported that the man fell down by himself. Other clients say that they were far away from the man and did not see anything. The police quickly concluded that no violence has occurred and the man fell down by himself. The man claims otherwise, asking several times that the police need to check the camera. The police refused, saying the the man cannot see the video recording. The man asked the policemen to check the camera themselves, but the policemen did not directly response to that request.
The content of the recording was not on the final report.
My question: is trusting the witnesses instead of camera recording legal in North America?