Rocky Anderson, former Mayor of Salt Lake City, formed the Justice Party in 2012 and was its presidential nominee. The party has not generally participated in elections since 2012, but it intends to petition for party status in several states for the 2018 election.
It appears to be one of only two political parties that had a booth at Politicon, held in Pasadena, California July 29-30. The Libertarian Party also had a booth. Neither of the major parties had a booth.