The days since Trump’s inauguration have seen a stream of cabinet appointments and executive orders that have sparked outrage across the country. A new opposition is already forming, from the women’s march to mass protests against Trump’s ban on immigration from seven majority-Muslim countries. “At the very moment when establishment politics have been severely undermined,” Jedediah Purdy writes in our new issue, “the American left has been reborn.” But in order to achieve political victories, the resurgent left must lay out practical strategies for opposing Trump and the ideology he represents. It’s not enough to urge solidarity—to say we resist racism and demand equality. We have to put actions to slogans. We asked scholars, activists, and politicians—from John Lewis to Gavin Newsom, Ai-jen Poo to Eliot Spitzer—to show us the way forward. Below, they outline the future of the American left and the shape of its resistance to Trumpism.

Immediately after the election, progressives began forming groups dedicated to resisting Trump. But they didn’t know what would be most effective. Liking something on Facebook isn’t going to move your member of Congress. We want to provide better tools. As former Democratic congressional staffers, we know how powerful local action can be, because it’s been used against us—by the Tea Party. So let’s use the Tea Party model for progressive goals.

The Tea Party recognized that they had the most leverage when they organized around issues that were in the national conversation, mobilized at the local level, and targeted individual lawmakers. They knew how each member of Congress had voted and never let them forget that they were accountable to their constituents. Everything lawmakers did was being watched. People came into our offices and were mean, aggressive, even violent. One weekend in 2010, there was a big Tea Party rally against the Affordable Care Act, and we had to lock our doors. At town halls, it seemed like every other question was really hostile. It reflected a level of organization and preparedness we had rarely, if ever, seen.

If we use the same approach, we can stall the Trump agenda. To be clear, we do not endorse the Tea Party’s racist or violent tactics. But some of their efforts—calling congressional offices and attending town hall meetings—can be exceedingly effective.

The strongest lever you have is your local member of Congress. There’s always an election coming up, and lawmakers are squeamish about losing their seats. If a local newspaper reports that protesters at a town hall barraged Congresswoman X with questions about corruption in the infrastructure bill, or if a group of constituents on social media calls Congressman Y unresponsive and untrustworthy, that makes them nervous. Some will go to great lengths to avoid those outcomes. Some may even change their positions or public statements.