As the current partial government shutdown has become the longest in U.S. history—even with the latest polls showing President Donald Trump and his fellow Republicans increasingly seen as the ones to blame for the crisis—it remains to be seen how the Democrats, with no reason to give ground, can apply enough pressure to bring the current impasse to an end.

But according to journalist and activist Barbara Ehrenreich and veteran labor organizer Gary Stevenson, it’s possible that the best bet—and in their minds, a key opportunity—is for the hundreds of thousands of federal employees now furloughed or forced to work without pay to take matters into their own hands.

While acknowledging how “painful” the shutdown has been for federal workers and their families locked out of work for more than three weeks, Ehrenreich and Stevenson argue in a New York Times op-ed published Monday that the current political deadlock between the two major political parties is “also an opportunity for labor to take a stand.”

Putting a strategic focus on the nation’s Transportation Security Administration (TSA) workers—”among the most visible” of the estimated 800,000 workers affected by the shutdown—the op-ed explores the idea of TSA workers going beyond passive resistance like sick-outs (an estimated 5.6 percent of the total 51,000 member TSA workforce called in sick last Saturday), and doing something bolder and more coordinated: “a genuine, old-fashioned strike, one with picket lines, chants, quickened pulses and the power to reignite the traditional fighting spirit of American labor.”

“Is there something more they can do—?” Ehrenreich and Stevenson ask, referring to the passive and uncoordinated calling out sick to work. “Something that would turn their plight into a stand not just against the shutdown but also against the arbitrary and insulting way American workers are so often treated in general?”

The TSA workers, they continue, “should use last year’s teachers’ strikes as a model. They were called not by the leadership of the teachers’ unions but by the rank and file. It was a new kind of labor activism, starting at the bottom and depending heavily on community support. By sticking together and creating their own communication system, the teachers succeeded in sending a powerful message of solidarity and strength.”

From the op-ed:

To the question of public backing, the idea of a #TSAStrike was finding plenty of anecdotal support across social media:

While the op-ed authors admit that a strike of TSA agents, because they are essential federal workers “would be illegal, as was the wave of public-sector strikes in the 1960s and ’70s,” the moral case for such an action is “unquestionably firm.” And they, add, “the time has come.”

Because the “federal government has broken its contract with its employees — locking some of them out of their workplaces and expecting others to work for the mere promise of eventual pay,” the TSA workers would be on very firm footing to walk off the job on behalf of themselves and the greater good.

Without some kind of major shift, write Ehrenreich and Stevenson, “All we know is that the shutdown continues without a break in sight.”