gives an account of this event being held on 11/24/2000. There is an image on that page that includes the same yellow framed sign reading "Stop Shopping Start Living".
From what I can find on the internet, the "Roberts Furs" sign in the background must be 272 Post St San Francisco, CA
The Co-ordinates (37.7885° N, 122.4065° W) given in the description map to Post St, just east of Stockton St.
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direction du point de vue<\/a>"}},"text\/plain":{"fr":{"":"direction du point de vue"}}},"{\"value\":{\"amount\":\"+270\",\"unit\":\"http:\\\/\\\/www.wikidata.org\\\/entity\\\/Q28390\"},\"type\":\"quantity\"}":{"text\/html":{"fr":{"P7787":"270 degr\u00e9<\/span>"}},"text\/plain":{"fr":{"P7787":"270 degr\u00e9"}}}}" class="wbmi-entityview-statementsGroup wbmi-entityview-statementsGroup-P1259 oo-ui-layout oo-ui-panelLayout oo-ui-panelLayout-framed">
What: Buy Nothing Day demonstration, downtown San Francisco Where: 37.7885° N, 122.4065° W, heading west When: December 2001 Rights: This photo (C) Lars Aronsson, December 2001. {{cc-sa}}