Kenneth Quinnell

As the strike by United Auto Workers (UAW) members at General Motors approaches three weeks, labor leaders from across the movement have shown their solidarity with the UAW workers by joining them on the picket lines. Here are some highlights from those visits.

In a tribute to the hardhat, which was invented 100 years ago, the New York Times curiously equates the safety gear with masculinity. But women wear hardhats, too, and always have.

Next up in our series that takes a deeper look at each of our affiliates is the Painters and Allied Trades.

History has long been portrayed as a series of "great men" taking great action to shape the world we live in. In recent decades, however, social historians have focused more on looking at history "from the bottom up," studying the vital role that working people played in our heritage. Working people built, and continue to build, the United States. In our new series, Pathway to Progress, we'll take a look at various people, places and events where working people played a key role in the progress our country has made, including those who are making history right now. Today's topic is the terrorist attacks of 9/11.

Next up in our series that takes a deeper look at each of our affiliates is the International Union of Police Associations.

As of midnight Sunday, United Auto Worker (UAW) members at General Motors have gone on strike. The 2015 collective bargaining agreement between UAW and GM expired Saturday and after GM offered an inadequate new contract. Nearly 50,000 workers are now on strike. They are demanding fair wages, affordable healthcare, a share of profits, job security and a defined path to permanent seniority for temporary workers.