Tonight's event was planned by One Love San Francisco. Organizers got the word out through social networking sites and e-mail.
They had hope to have a bigger impact than the rally last weekend had, but only brought out a few dozen people.
It was planned as a non-violent civil rights march along Market Street.
The last Friday night rally caused traffic nightmare as protesters shut down Market Street.
California's highest court agreed Wednesday to hear several legal challenges to Proposition 8 but refused to allow gay couples to resume marrying before it rules.
The California Supreme Court accepted three lawsuits seeking to the proposition, which overturned the court's decision in May that legalized gay marriage.
All three cases claim the measure abridges the civil rights of a vulnerable minority group. They argue that voters alone did not have the authority to enact such a significant constitutional change.