A day after they were arrested at the U.S. Capitol during a protest, Ben and Jerry's founders Ben Cohen and Jerry Greenfield were in Baltimore advocating for campaign finance reform.

Cohen and Greenfield visited the American Visionary Art Museum to unveil The Stamp Mobile, the flagship mobile stamping vehicle of StampStampede.org, a project created by Cohen.

The Stampede encourages citizens to rubber stamp their paper money with messages that demand an end to financial influence in politics, with the goal of overturning the Supreme Court's Citizens United ruling.

The Stampede project sells rubber stamps through their website which are designed to be used on paper money with messages like "Not To Be Used for Bribing Politicians" and "Stamp Money Out of Politics."