According to Temitope Omotayo who shared the photo, the men and women pictured here are students of Yoruba language at University of Wisconsin, Madison, U.S.
"So if you are still ashamed of your culture and you feel reluctant to speak your language with your children then na you know o. If we don't teach our children our language. I am sure these new set of people who are passionate about learning the language will teach them. I am referring to Hausa, Yoruba Igbo, Swahili & other African languages" he said