Yes, it DOES take your breath away... His policies have DAMAGED every single one of the workers in these industries, yet they vote for him. Like lemmings, like automatons. Mind boggling.
I don't think he's damaged unionized teachers or other government workers. Remember, a large percentage of union employees these days are government employees.
The private sector unions support the Dems no matter what too, not because it has anything to do with their workers' welfare, but because the Dems will look the other way or even assist them when the union heads engage in corrupt activities. Klintoon protected a number of crooks in the Teamsters union like former head Carey and engaged in illegal funds transfers between the Teamsters and the DNC. In return, the unions fill their bird-brained rank and file's heads with BS about how the Dems are on their side etc.
Remember the UPS strike? UPS wanted to switch from the Teamster's multiemployer pension plan, i.e., one in which the Teamsters control the pension fund, to a single employer plan which would have paid MORE benefits to their workers. The Teamsters called a strike and wouldn't allow their workers to vote on it. I don't think half the rank and file ever understood what the hell the strike was about anyway.