Bakers’ union officials and their supporters say also that the demise of Hostess Brands Inc., which failed to convince striking workers to return to their jobs, is a warning sign for corporate investors seeking to squeeze more profits out of the working class.

“Unions have been losing power for years,” said Ken Rumney, a striking worker outside of the Hostess plant in Biddeford on Friday. “This is an exceptional case. If Hostess had been allowed to get away with what they’d been trying to do, other corporations would have lined up to try the same tactics. Hopefully, this will be an example to other companies not to [try to] break their unions.”

“I think we’re the first ones who have stood up and said, ‘We’re not going to let you get away with it,’” said Sue Tapley, the strike captain on hand Friday morning at the Biddeford plant, which employed nearly 600 people. “You can fight them. You can shut them down.”