The public bus operators of Santa Monica, California, are refusing to run paid advertisements from AIDS Project Los Angeles (APLA) to promote its upcoming AIDS Walk on October 14, Southern California Public Radio reports. Big Blue Buses says it mistakenly violated its own rules the past several years by previously accepting the ads. It says that in order to avoid having to choose which nonprofit ads to accept, Big Blue Buses only sells ads to commercial businesses. The mayor of Santa Monica is asking the City Council to consider how to allow ads from APLA and other nonprofits.

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