40 cities around the world are set to mark the 1,000th day of WikiLeaks source Bradley Manning’s imprisonment. Manning’s whistleblowing acts will be honored and his imprisonment without a speedy trial denounced this weekend in places ranging from Denver to Rome to Sydney.

Manning is alleged to have been the source behind massive amounts of information WikiLeaks exposed, including the State Department cables that exposed nefarious dealings in U.S. foreign policy as well as the “Collateral Murder” video that showed U.S. Army helicopters firing and killing Iraqi civilians.

The rallies around the world are being organized by the Bradley Manning Support Network. “Supporters are gathering in cities across the U.S., Europe and Australia for marches, rallies, art installations, concerts, live theater, and other events to criticize the unjust prosecution and raise awareness about Manning's case,” the network states.

Manning’s court martial trial is set for June of this year–three years after his initial arrest. His imprisonment by the military was marked by punitive abuse that included isolation and his clothes being removed from him. A UN rapporteur called Manning’s conditions “cruel, inhuman and degrading,” and earlier this year a judge confirmed that Manning’s conditions were excessively harsh and constituted pretrial punishment, which is prohibited under military law.