Shane Claiborne wrote on the Red Letter Christians website that he and 11 other defendants will go to trial on the week starting June 28 in Washington DC, on charges related to what he's called "parading and assemblage".
He's best-known for his advocacy work for the poor and those sentenced to death, as well as his books The Irresistible Revolution and Jesus for President.
The initial protest in January included pastors, a former death row inmate who was wrongly convicted and later freed, and families of both those murdered by people on death row as well as those who's relatives have been executed on death row.
Eighteen people were arrested and held in jail for more than 30 hours. Six of the eighteen accepted a plea bargain from the government but Shane Claiborne chose to go to trial to contest the charges against him along with 11 others.
If Claiborne or the other 11 are found guilty they could be jailed, given community service or fined.
He said on the website: "Our prayer is for an end to all killing, both legal and illegal.
"Our message is that violence is the disease, not the cure. It is time to stop trying to kill those who kill to show that killing is wrong."
