It is a mostly solemn occasion celebrated with theater, the placing of wreaths to martyred patriots, historical video, poetry readings, music, and performances by diverse ethnic troupes. This year's commemoration was capped off by a contribution from a fine Mexican dance ensemble.
Thanks to Prio Karmakar of Prio Bangla for his help.
From Wikipedia: "21 February was declared to be the International Mother Language Day by UNESCO in 1999. The declaration came up in tribute to the Language Movement done by the Bangladeshis (then the East Pakistanis).
Photography by Lloyd Wolf.