This Labor Day is a great time to talk about worker power. Support for labor unions is close to a 50-year high, according to a recent Gallup poll, at 64 percent. And the United States is in the throes of the biggest strike wave since the 1980s. Nearly half a million Americans went on strike last year. From coast to coast, work stoppages and labor protests keep coming.

Enthusiasm for unions is complicated by the fact that union membership has sunk to a historic low, at 10.5 percent. Millions of workers in the United States are not eligible to form unions—let alone authorize strikes. Today, 60 percent of employers threaten to shut down operations or move their businesses when workers vote to form a union. “The fact that 64 percent of Americans say they approve of unions and only 10 percent have a union is a huge disconnect,” Lane Windham, a labor expert at Georgetown University told Motherboard. “It’s not okay. It means people cannot actively exercise their right to free association.”

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Young people, women, and minorities lead the country in their support for organized labor, according to Gallup. Sixty seven percent of Americans between the ages of 18 and 34 support unions, the highest of any demographic group. “The strike wave and high union approval are part of a larger trend that we’re seeing now that is being driven by young people, especially young women and people of color,” Windham said. “Young people are redefining the movement itself. A lot of workers are prohibited from forming unions. They’re temps, independent contractors, low level supervisors. They work for franchises.”