After months of privately battling the tech giant over President Trump’s free rein on its social network, the campaign will begin urging its millions of supporters to demand that Facebook strengthen its rules against misinformation and to hold politicians accountable for harmful comments.

On Thursday, the campaign will circulate a petition and an open letter to Mark Zuckerberg, Facebook’s chief executive, to change the company’s hands-off approach to political speech. The petition will be sent to millions of supporters on its email and text message lists and through social media, including Facebook, imploring them to sign the letter. The campaign will also release a video this week to be shared across social media to explain the issue.

“Real changes to Facebook’s policies for their platform and how they enforce them are necessary to protect against a repeat of the role that disinformation played in the 2016 election and that continues to threaten our democracy today,” said Bill Russo, a spokesman for the Biden campaign.