Big DEAL.
In the grand scheme of things, a little shove or two is nothing. But getting images of the totally irrational actions on the part of the union thug out to the public serves a greater purpose. It alerts the public to the antics of the left and paints the union thugs as the bullies that they are. People that are sympathetic to their next door neighbor, who might to be a member of the UAW will not be sympathetic to the union cause when they are witness to acts like this. Even a sizeable portion of the union membership, especially in "closed-shop" unions where they have no choice on whether to be a member or not, don't like the tactics of thuggery.
If a Tea Party member had shoved a liberal, it would be front page New York Times tomorrow. A shove isn’t ‘nothing’ unless it’s a conservative being shoved.