That's private industry unions, Sawz- not public employee unions. Apparently the lies and denegrations of public employees Walker and the TeaPotty have been vomiting worked on the jealousy of a good number of blue-collar union members who have been getting screwed over for years.

Dylan had something to say about this:

While one who sings with his tongue on fire
Gargles in the rat race choir
Bent out of shape from society's pliers
Cares not to come up any higher
But rather get you down in the hole
That he's in

(emphasis mine)