Following one of the most high-profile union votes in history, workers at an Amazon warehouse in Bessemer, Alabama ultimately rejected efforts to form a union. But for labor advocates, this fight is far from over.

“The Amazon workers who voted for a union in Bessemer are already winners,” Rev. William Barber of the Poor People’s Campaign said. “This is just the first round.”

“Amazon did things to intimidate and suppress the vote,” he added. “The workers are filing complaints, and they will continue to stand up. They have set a fresh trend in the South, and the echoes of their bold action will reverberate for years.”

The Bessemer union drive is just the beginning of a re-energized national labor movement — a movement driven by the systemic inequality that has allowed Jeff Bezos to become the richest man in the world while his employees are forced to forgo breaks and urinate in bottles.

Inspired by the fight in Bessemer, Amazon workers at other fulfillment centers in Baltimore, New Orleans, Portland, Denver, and southern California have all begun exploring ways to form unions at their own Amazon facilities.

“The American public is now hyper-aware of what Amazon warehouse workers and drivers are forced to go through: Grueling hours with impossible demands,” said Erica Smiley, executive director of Jobs With Justice. Now “Amazon workers nationwide are finally feeling safe and supported enough to start organizing their own warehouses.”

Every unionization drive is an uphill battle. While support from the public for unions is generally positive — polling from the AFL-CIO showed that 77 percent of Americans support a union for Amazon workers in Bessemer — current federal labor law isn’t strong enough to thwart corporate union busting.

Throughout the entire voting period, Amazon misled and intimidated workers. From attempts to delay the vote multiple times to creating a “Do It Without Dues” campaign (despite Alabama’s “right to work” rules, which prohibit mandatory union member dues) and restricting mail-in ballots, it’s clear the cards are stacked against the workers.

“Americans want to organize unions,” said AFL-CIO President Richard Trumka. “And it should never be this hard to do so.”

The Retail Wholesale and Department Store Union (RWDSU), which helped organize the drive in Bessemer, has announced that it is contesting the results of the election, alleging Amazon interfered with the right of Bessemer employees to vote in a free and fair election — a right protected under the National Labor Relations Act.

“Working people deserve better than the way Amazon has conducted itself during this campaign,” said RWDSU president Stuart Appelbaum. “Amazon’s behavior during the election cannot be ignored and our union will seek remedy to each and every improper action Amazon took.”

A clear way to ensure fair, democratic union elections is for the U.S. Senate to pass the Protecting the Right to Organize (PRO) Act. The PRO Act, which passed the U.S. House in March, would add real teeth to existing federal labor laws.

Nearly all of the union-busting tactics deployed by Amazon — including forcing workers to attend meetings where supervisors promote anti-union messaging, delaying or stalling the vote, and retaliating against workers for organizing for better conditions — would be banned under the bill.

Just as importantly, they would be enforced. The bill would fine employers up to $100,000 for NLRA violations.

While it will take weeks for the NLRB to review the potential election violations committed by Amazon, the results are a clear indication that if the law had already been in place, this would have been a much more transparent process.

Union drives are not stopping. It is up to Congress to ensure that workers in the future are protected from corporate greed.