OAKLAND, Calif. (AP) Former President Barack Obama and Golden State Warriors superstar Stephen Curry told a roomful of minority boys on Tuesday that they matter and urged them to make the world a better place.

Obama was in Oakland, California, to mark the fifth anniversary of My Brother's Keeper, an initiative he started after the 2012 shooting death of 17-year-old Trayvon Martin. The death of the African-American teen sparked protests over racial profiling.

The initiative was a call to communities to close opportunity gaps for minority boys, especially African-American, Latino and Native American boys, Obama said to roughly 100 boys attending the alliance's first national gathering. The My Brother's Keeper Alliance is part of the Obama Foundation.