The District of Columbia’s highest court today unanimously upheld the conviction of six protesters who were arrested in January 2007 on the steps of the U.S. Supreme Court for unfurling a 30-foot banner that said, “STOP EXECUTIONS!”

The six protesters who challenged the prosecution had unfurled the banner while they were waiting in line the morning of Jan. 17, 2007, to attend an argument session in the high court. The demonstration marked the 30-year anniversary of the execution of Gary Gilmore, the first person put to death since the reinstatement of capital punishment in 1976.