A few days later, the Post ramped it up again after learning authorities were looking into the rumors. Here’s its lede:

There may be blood on their hands.

Federal and state investigators are probing whether the fleet of selfish Sanitation bosses who allegedly intentionally left city streets clogged with snow are responsible for the deaths of New Yorkers who couldn’t get swift medical aid, The Post has learned.

Bloomberg columnist Kevin “Dow 36,000” Hassett, also of the right-wing American Enterprise Institute, seized on the unsubstantiated reports to file an atrocious column headlined: “Snowplow Slowdowns Might Become American Way.”

If city workers did undermine the slow-clearing effort to protest budget cuts, they may have contributed to the death of a baby girl in Brooklyn, who waited with her 22-year-old mother nine hours for emergency crews to fight their way through the snow-covered streets. A Queens woman watched her elderly mother die as she waited three hours for an ambulance to arrive.

Americans better get used to this treatment.

And that was the aha moment for me—a signal to keep an eye on this story. See, there’s been this intense campaign recently from the likes of Hassett, AEI, Newt Gingrich, and the Murdoch press to scapegoat public-sector unions for high taxes and the budget woes of the states. These people hate labor and, having essentially killed private-sector unions, are now trying to choke them out of the public sector. And it’s a two-birds-with-one-stone deal: Public-sector unions are heavily Democratic voting and give lots of money to liberal politicians’ campaigns.

On January 7, F. Vincent Vernuccio, of the right-wing Competitive Enterprise Institute, led off an op-ed in The Washington Times with this:

“Cross us and people will die.” That is the message the public can take away from last week’s New York snow-removal meltdown (no pun intended). The debacle showed how government employee unions, by holding a monopoly on services, can cripple communities in retaliation for not getting what they want. And they will do it time and time again.

Reports show that members of the Uniformed Sanitationmen’s Association Local 831, an International Brotherhood of Teamsters affiliate, slowed down cleanup efforts, turning last week’s blizzard into a disaster for New Yorkers as emergency-response vehicles could not get to those in need.

Vernuiccio’s takeaway from the “slowdown”?: That states and cities should revoke collective-bargaining rights for government workers and privatize as many services as they can.

So fishing around for the perfect anecdote to illustrate the perfidy of organized labor, these folks happen upon a loon from Queens whose story, as the Times notes, evolved along the way, allows them to allege New York sanitation workers waged an illegal slowdown and have babies’ blood on their hands.

Never mind that the story is almost certainly garbage (no pun intended), as the Times has now shown. Kevin Hassett isn’t going to go back and file a column apologizing for his earlier one. CNN probably won’t revisit the story, Fox surely won’t and the Post will find a way to slough it off.

Even if they do correct the record, it won’t reach the saturation coverage and contain the purple language the original reports did. Facts be damned: The vicious anti-union propaganda is planted in the public’s mind.

And that’s the whole point.

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Ryan Chittum is a former Wall Street Journal reporter, and deputy editor of The Audit, CJR's business section. If you see notable business journalism, give him a heads-up at rc2538@columbia.edu. Follow him on Twitter at @ryanchittum.