This is Busójárás, a traditional festival in Hungary that takes place toward the end of February. It began with the Croatian minority living in the town of Mohács in the southern part of the country, but has since spread nationwide.
As part of the festival men known as busós wear heavy coats and horrifying masks. The goal is to look so frightening that winter flees to make way for spring. They also parade in homemade floats down city streets and the Danube River. You can see more colorful photos of this lively festival at the Daily Mail.
-via Jonah Goldberg