War and Social Upheaval Cause Spikes in Zombie Movie Production

Is there really a connection between zombie movies and social unrest? We decided to do some research and find out. The result? We've got a line graph showing the number of zombie movies coming out in the West each year since 1910 — and there are definite spikes during certain years, which always seem to happen eerily close to historical events involving war or social upheaval. more