From Gladiator to Braveheart, most historical fiction about fighting with swords is kinda wrong, influenced more by performance art than how people actually fought each other with blades. Back to the Source, a documentary about Historical European Martial Arts (HEMA), is looking to show people how it was actually done.We told you about this project last year when it was a Kickstarter, but the documentary is now complete and ready for viewing on YouTube. Or below.