Is this really a tantrum?

One night after dinner, while still in their high chairs, the babies started having a terrible tantrum. Both were screaming, crying, kicking and thrashing. I got the camera, pointed it at them and as soon as they saw the red light on the camera they would ham-up for it! As soon as the flash was gone, they were back to having a tantrum. They kept doing this over and over. In between each of the below photos, the babies were literally having a tantrum.