Nasrin Sotoudeh is a prominent human rights lawyer who was arrested in September 2010 and sentenced in December to 11 years in prison --- later reduced to six years on appeal --- with a 20-year ban on legal practice. The official charges included spreading propaganda, conspiring to harm state security, and failing to wear hijab. Her real "crimes" were daring to defend many political prisoners, including those seized after the June 2009 Presidential election, and speaking to foreign media about the situation in the country.
The International Campaign for Human Rights in Iran has posted this video campaigning for her release: