Tens of thousands of striking teachers and their allies marching through the streets of Chicago last fall had a back-story, a little-discussed trend in organized labor—reform movements.

Walmart store workers have launched their most ambitious effort yet to improve conditions at their giant, stubborn employer. More than 100 walked out of dozens of stores this past week, in the longest strike attempted so far.
Remember the dramatic, aggressive attacks on workers by legislatures in Wisconsin, Indiana, Ohio, Michigan? Now North Carolina is following suit. Lawmakers have proposed dozens of bills attacking workers’ rights, health care access, voting rights, and social programs.

A union has been signing up thousands of members at small nonprofits that grow and sell medical marijuana. But to the federal government, the entire industry is criminal.