The Black Exodus of 1858 SAN FRANCISCO, CA (kalw) - The percentage of African-Americans living in San Francisco has been in decline for more than a decade, so that's hardly news. A fact you may not know, however, is that 150 years ago, the city's Black population dropped by more than 25 percent in just one week. Events are being held this week to commemorate that period, including one at San Francisco's Hyde Street pier... © Copyright 2009, kalw