Mohammad Ali Dadkhah is a prominent Iranian human rights lawyer. He is a co-founder of the Defenders of Human Rights Center (DHRC), which the Iranian regime has sought to suppress. In the aftermath of Iran's disputed June 2009 elections, Dadkhah represented several jailed political and human rights activists. In July 2011, he was sentenced by the Iranian judiciary to nine years in prison for attempting to overthrow the ruling system, among other charges. His sentence was upheld in April 2012, and on 29 September, he was called to prison to begin his sentence. I know about him because he defended the Christian Pastor Nadarkhani (who is now free, with help from international pressure).
Does anyone know if there are any campaigns or petitions I could sign up to as I would like to show support for this man.