Hoping to quell anger in the black community, the San Diego City Council unanimously approved a resolution that calls for the mayor and city manager to set up a process by which the city will name a new memorial for slain civil rights leader Martin Luther King Jr. The resolution, which put the council on record in favor of a memorial for King, was introduced by Mayor Maureen O'Connor in the wake of last week's citywide vote to strip King's name from a downtown thoroughfare and reinstitute the name of Market Street. Nearly 60% of those voting approved the change. Black leaders say they were stung by the vote, and called for convention groups to boycott San Diego as a gathering place. They also said they want a period of mourning over the vote and do not favor the city moving too quickly in seeking another street or public structure to name for King.