Parade of the Day of Bulgarian Education and Culture, and Slavonic Alphabet, on May 24, 2016, in Sofia, Bulgaria.
{"Image ImageDescription": "Parade of the Day of Bulgarian Education and Culture, and Slavonic Alphabet, on May 24, 2016, in Sofia, Bulgaria. (Photo by Hristo Vladev/NurPhoto via Getty Images)", "Image Copyright": "Hristo Vladev/NurPhoto"}