WASHINGTON, D.C. – So you think labor unions are just friendly organizations of hard-working people who stick together to work for decent pay and benefits?

They can also be masters of filthy tactics and dirty tricks, particularly when contract negotiations are not going their way.

One good case in point is the Service Employee International Union’s “Intimidation Manual,” a 70-page primer for union members who are tired of negotiations and no longer want to play by the rules of civilized behavior.

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For instance, the manual advocates for “economic hit jobs” against uncooperative employers, according to a news item on TheBlaze.com. That would include uncovering and publicizing unflattering factual information about employers, particularly to their clients, friends and neighbors.

The manual suggests “leafleting outside meetings where (targeted managers) are speaking, their homes, or events sponsored by community organizations they are tied to in some ways to make sure their friends, neighbors and associates are aware of the controversy.”

The overall goal is to see if union pressure can jeopardize relationships “between the employer and lenders, investors, stockholders, customers, clients, patients, tenants, politicians, or others on whom the employer depends on for funds,” according to writer Vincent Vernuccio in the Washington Times.

Employers who value those relationships might strongly consider giving the union what it wants. Just like a parent who loves his child would strongly consider giving the kidnapper what he wants. It’s the same sickening strategy.

As Vernuccio summed it up, “In essense, it seems nothing is off limits.”

This type of philosophy is not limited to the SEIU.

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During a recent teachers strike in Strongsville, Ohio, union members spent weeks picketing directly outside the homes and workplaces of school board members. They also passed leaflets out in the neighborhoods of replacement teachers, asking residents if they realized they lived in the vicinity of “scabs.”

The underlying message is this: Don’t mess with the unions. They have no morals and they will fight dirty.

To read more installments of “The Other Labor History: What Kids Won’t Learn,” click here.