Ferguson shooting verdict: Protesters break windows in San Francisco shops

Oakland: Hundreds of protesters are marching through downtown San Francisco streets packed with Black Friday shoppers to protest a grand jury decision in Ferguson, Missouri.

KGO-TV is reporting some in the crowd are using hammers to smash the windows of stores in the city's touristy Union Square.

Read: Ferguson shooting: Celebrities call for 'Black Friday' boycott

KGO-TV reports the crowd marched Friday night through the heart of the city's shopping district and arrived at Union Square, where police stopped them from disrupting the lighting of a Christmas tree in the popular area.

Earlier on Friday, another group of protesters chained themselves to trains in Oakland and temporarily interrupted Bay Area Rapid Transit service from Oakland to San Francisco.