This medieval carnevale game is easy. You get into an intricate costume (as does your horse), you ride in a parade through town to a starting point, then, when it’s your turn, you gallop down a street mounded with sand as fast as you can and do what you see in the picture, namely skewering a hanging star, which has a hole of about one inch in the center, using your foil.
It takes quite a bit of skill. And the horse has to cooperate, too.
Otherwise:
It’s a fascinating, all day affair with parade. For more on the festival and find out the dates of the next Sartiglia, see the official Sartiglia site