Solidarity Forever

John Cronan, Third Engineer of the Maersk Alabama, explains how the crew kept pirates from taking over the ship:

We are American seamen.  We are union members.  We stuck together, we did our jobs.  And that's how we did it.

Or as they like to say:

When the union's inspiration through the workers' blood shall run
There can be no power greater anywhere beneath the sun
Yet what force on earth is weaker than the feeble strength of one
For the Union makes us strong

Solidarity Forever.

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I love that song, and the linked version is very nice.
It's better when you've got sixty kids shouting it in time to stomping around though.