A recall movement led by a radio talk-show host and a longtime Filner opponent began Sunday to gather signatures to force a public vote, backed by a “Freedom From Filner March.” Activists say the anger against Filner is unparalleled in San Diego history.

But most local political consultants say the signature-gathering task is virtually impossible without an army of paid signature-gatherers, which the recall movement lacks.

All six recall movements against San Diego mayors have failed to reach the ballot. In addition, the city’s recall laws have legal problems, the city attorney has said, and could be challenged in court, potentially scuttling the recall movement against Filner even if sufficient signatures were gathered.

The sexual harassment lawsuit against Filner by one alleged victim could take a year or more to get to court, according to attorneys familiar with similar lawsuits.