From the Yale University emergency management website:
This is an emergency preparedness video. This video guides people through the actions they would need to take if confronted by an active shooter. This video depicts fictional events on the Yale campus. Some content may be disturbing. It is intended as a learning tool.
You can watch the 8+ minute video at this link: http://emergency.yale.edu/be-prepared/active-shooterweapon (not yet available on youtube).
Other examples of the expanding run-fight-hide video literature can be found at these links: