Moveon.Org is conducting fundraising activities from the Chicago protests against Donald Trump that prompted the Republican presidential front-runner to cancel a rally there Friday, and promises that more disruptions are on the way. “Last night, without consulting local police, Donald Trump abruptly cancelled a rally in Chicago in the face of massive and overwhelmingly peaceful student-led protests,” MoveOn.org wrote in an email Saturday to members.

“We’re being flooded with aggressive emails and social media posts from Trump supporters. Some of them are threatening. We refuse to be intimidated by Donald Trump, Fox News, or anyone else.”The email asked members to donate $3 to help the effort. The progressive group is funded by billionaire George Soros, and has endorsed Democratic candidate Vermont Sen. Bernard Sanders for president. READ MORE