A point to bear in mind is that whilst a lot of the youth of today (and a lot of middle aged people) have little or no respect for the police or other people in uniform, the same isn't generally true of the "older generation".
This gentleman of 79 may well have believed that he had no option but to do as instructed, especially if the "security" staff were in uniform, and it might not even of crossed his mind that he could object or refuse their commands.