When your government goes medieval on you, it's time to get medieval back.
Demonstrators protesting strongarm President Viktor Yanukovich in the Ukrainian capital of Kiev this week have assembled a wooden catapult, based on a centuries-old design, to launch projectiles at attacking authorities. The ancient artillery presumably helps the protesters keep cops with crowd-dispersal munitions, like tear gas, at a greater distance.
The firing crew carefully pulls the launch arm down to load its "ammunition" into a bucket—in this case, a worker's hard hat:
The ammunition in this case is stones, loaded into the helmet:
Once the load is secured, the crew tensions the arm to "cock" it.
And then, physics takes over.