Page "Oakland, California" Paragraph 31

By the end of World War II, blacks constituted about 12 % of Oakland's population, and the years following the war saw this percentage rise.

There was also an increase in racial tension.

Starting in the late 1940s, the Oakland Police Department began recruiting officers from the South to deal with the expanding black population and changing racial attitudes ; many were openly racist, and their repressive police tactics exacerbated racial tensions.