A group offering bounty payments for sightings of conservative Supreme Court justices is the latest harassment campaign prompting Republican lawmakers to call for immediate action by the Justice Department.

Piling on top of recent protests outside the homes of Supreme Court justices, the activist group known as ShutDownDC tweeted July 8 that it would offer to pay bounties of up to $200 for anyone who reports the whereabouts of Justices Amy Coney Barrett, Brett Kavanaugh, Neil Gorsuch, Clarence Thomas, and Chief Justice John Roberts, part of a pressure campaign against the court’s members who voted to overturn Roe v. Wade last month.