Labor unions, marveling at how the protesters have fired up the public on traditional labor issues like income inequality, are also starting to embrace some of the bold tactics and social media skills of the Occupy movement.

Last Wednesday, a union transit worker and a retired Teamster were arrested for civil disobedience inside Sotheby’s after sneaking through the entrance to harangue those attending an auction — echoing the lunchtime ruckus that Occupy Wall Street protesters caused weeks earlier at two well-known Manhattan restaurants owned by Danny Meyer, a Sotheby’s board member…

“The Occupy movement has changed unions,” said Stuart Appelbaum, the president of the Retail, Wholesale and Department Store Union. “You’re seeing a lot more unions wanting to be aggressive in their messaging and their activity. You’ll see more unions on the street, wanting to tap into the energy of Occupy Wall Street.”