The leaders are charged with terrorism , spreading propaganda against Iran and religious offenses . The U.S. State Department has condemned Iran 's decision to try the leaders . The Shi ' `` Authorities have detained these persons for more than 20 months , without making public any evidence against them and giving them little access to legal counsel , '' the department said in a statement . i faith are the country 's largest non - Muslim religious minority .
The leaders are charged with terrorism , spreading propaganda against Iran and religious offenses . The U.S. State Department has condemned Iran 's decision to try the leaders . The Shi ' i faith are the country 's largest non - Muslim religious minority .