The largest self defence class involved 2,212 participants and was a Krav Maga lesson organized by the South American Krav Maga Federation at Copacabana beach, in Rio de Janeiro, Brazil, on 29 May 2010.

The lesson was directed by Master Kobi Lichtenstein (Israel) to celebrate the 100th anniversary of the birth of Imi Lichtenfeld, the creator of Krav Maga, and the 20th anniversary of the presence of Krav Maga in Brazil. Participants from 27 countries took part at the class.