I'm planning out a new, state-of-the-art, completely 'legal' prison. Basically, I want to cram loads of prisoners in seperate holding areas, then at a certain point in the day we force them out into the main arena to fight to the death. Several guards will patrol the arena perimeter, but we'll keep the actual amount of people who know about what happens in the... 'prison' to a minimum, so that we can conduct some scientific research on these men, for science.

Obviously, those too weaak to fight will be put to eternal manual labour in the death camps, where they will pump out money for me until it is almost time for their release, when they will be put on death row and killed mercilessly.

The thing is, I'm not sure how to make the prisoners riled up enough that they attack each other, but they don't attack the guards. Is this possible, or will my dreams of a torturous death camp remain a dream?