The Ride of the Kings (Jízda králů in Czech) is a festival celebrated in Moravia. you’ll know it when you see a young boy in female folkloric clothes and a rose in his mouth riding a decorated horse.
Joža Úprka, Legend of Moravian Rural Painting
If you’re interested in Czech rural painting, especially from Moravia, the first name you should know is that of Joža Uprka.