If the bladder muscle is weak or does not contract as it should, then the bladder will not empty properly. Or if the bladder neck cannot relax or is scarred, it will be difficult for the bladder muscle to force urine past it. In both cases the bladder may not empty completely.
Finally, in 1974, the District of Columbia Home Rule Act allowed for District residents to elect their own mayor. Currently, the Mayor of the District of Columbia is popularly elected to a four-year term with no term limits. Even though Washington, D.C. is not a state, the city government also has certain state-level responsibilities, making some of the mayor's duties analogous to those of United States governors. The current mayor of Washington, D.C. is Muriel Bowser, a Democrat, who has served in the role since January 2, 2015. The lists on this page include all of the chief executives of the District of Columbia in their various forms.
The first black mayor of a major U.S. city was Carl Stokes, a Democrat who was elected mayor of Cleveland, Ohio in 1967. Later that same year, Richard Hatcher was elected mayor of Gary, Indiana. This ushered in the first generation of black mayors in the US, and in the early 1970s major cities such as Detroit, Los Angeles, and Washington, D.C. all elected their first black mayors. The first black mayor of a major southern city was Maynard Jackson, also a Democrat, who was elected mayor of Atlanta, Georgia in 1973.