The candidates in the Republican race to the presidential nomination may still be criss-crossing the country slamming each other for not being extreme enough, but there is certainly one thing they all agree on writes John Nichols—they hate unions!

Like Wisconsin Gov. Scott Walker, Ohio Gov. John Kasich and Maine Gov. Paul LePage, they are anti-labor extremists whose opposition to free trade unions goes to extremes not seen since Southern segregationists sought to bar unions because of their fear that white workers and people of color were being organized into labor organizations that would threaten Jim Crow.

Click here to read more from Nichols, a Washington correspondent for The Nation and associate editor of The Capital Times in Madison, Wisconsin.