Oakland has a vibrant Black business community. Here's some places to go if you want to support local Black entrepreneurship.
At one point there was an Oakland African-American Chamber of Commerce. Anyone know if that's still around? (site down, facebook out of date)
If you know a Black owned business in Oakland that isn't in the list below, find its page on the wiki and tag it with 'black owned' and it will show up here! (If there isn't a page for it already, feel free to create it :))