The video here shows why -- union thugs collapsed a tent full of supporters of right to work legislation in Michigan and then trampled over it.
As the union members attacked the Americans For Prosperity tent, a woman cried out “there are people under there, oh my God” (at 1:20). At 1:40, as union members start walking on top of the collapsed tent, a man shouted “hey, there are people in there” but again the crowd didn’t stop, and the union members continued walking on the collapsed tent defiantly as the crowd shouted obscenities and cheered.
At 1:57 the woman cried out again “there’s people in there,” but to no avail. You can then see various people probing at large lumps under the tent, presumably checking if anyone was trapped. Yet the crowd continued with its profane taunts, as others lifted the edges of the tent and looked underneath, again presumably to see if anyone was trapped.
Someone shouts “go home you bunch of parasites” as the crowd chanted “Go Home.” At 3:30 someone asks, “does someone want to help me lift this? I wonder if there are any people in there.” Then another person said, “there was, there was a bunch of women and older people.” Then another person yelled, “fuck these people.” Another yelled, “they want a war, they got it.”
I've got no objection to voluntary union membership (I'm the building representative for a teacher's organization in my district) -- but this video shows what happens when you threaten to take away a union's right to compel membership -- violence and threats of violence lest people have freedom.
UPDATE: Two of those trapped in this incident were disabled individuals in wheelchairs. Will the eventual criminal charges be enhanced on that basis? And apparently one of the thugs involved has been identified.