SAN FRANCISCO – The do-gooders in America’s most “progressive” city are at it again.

Having successfully banned plastic bags, plastic water bottles, Happy Meal toys, Segways driving on sidewalks, and violent movie posters, San Franciscans may soon impose a two-cents-per-ounce tax on soda.

The soda tax proposal will be put before voters in November. If approved, it would generate an estimated $31 million a year for nutrition programs and other health initiatives in San Francisco’s public schools, reports ModernLuxury.com.

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We’re guessing here, but it seems highly likely that most of that $31 million would be used to hire a slew of unionized school employees to implement those “programs.” That’d be one reason why United Educators of San Francisco – the local teachers union – is supporting the measure.

San Francisco’s soda tax fight could have national consequences. There have been attempts in numerous other cities to tax the sugary drinks, supposedly to drive down consumption and improve the public’s health. (Don’t kid yourself – soda tax supporters desperately need new revenue streams to help support all their Big Government policies.)

So far, all soda tax efforts have failed because the beverage industry has successfully convinced a majority of voters the tax will lead to higher bills at the grocery store. But it might be a different case in San Fran where residents and opinion-makers seem willing to use the slightest pretext to grow government and curtail personal freedom.

ModernLuxury.com speculates that if the tax succeeds, it “would hit Big Soda where it hurts—beyond the pocketbook, in the arena of public opinion. In fact, advocates here liken their work to early efforts to pass anti-smoking laws a half century ago, before Big Tobacco began to lose its grip.”

In other words, the soda taxers believe a win in San Francisco could be the domino that sets off a chain reaction.

The American Beverage Association – which is supported by deep-pocketed Coca-Cola and PepsiCo – is striking back. The group has blanketed the city with mailers that link the soda tax to San Francisco’s soaring cost of living.

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The outcome is anyone’s guess.

“Recent polls suggest a photo finish for the measure, which requires a two-thirds majority to pass,” ModernLuxury.com reports.