Sociedad Latina, a Latino youth advocacy organization, held its annual Three Kings Day celebration yesterday. About 300 people crowded into Roxbury’s Mission Church Parish Center yesterday to celebrate the occasion, complete with music, awards, healthy(ish) breakfast foods, and games. The event, in its 21st year, has taken a more modern approach in its celebration of the traditional Latino holiday, this year focusing the event on family, Latino solidarity, education, and healthy eating.