The City of St. Petersburg welcomes New York Times best-selling author and NAACP Image Award winner Omar Tyree, who leads a Martin Luther King Jr. Memorial lecture, "The Dream Revisited: Has It Been Attained?" Tyree is joined by special guests Rev. Louis Murphy and the Mount Zion Progressive Missionary Baptist Church Choir. 7 p.m., USF-St. Petersburg Campus Activities Center, 140 Seventh Ave. S., St. Petersburg, free admission.