Aung San Suu Kyi was, and still is, the most influential opponent of the military junta and the leader of the Burmese Democracy Movement.
She was first placed under house arrest on the morning of July 20, 1989, a day after the 42nd anniversary of her father's assassination. Her father was the late Aung San, who led Burma to independence. It was in 1991 that she won the Nobel Peace Prize.
She was imprisoned BEFORE the May 1990 Burmese elections. As you may know, it was her party, the National League of Democracy, that won 82% of the parliamentary seats; she, as the leader of the NLD, was elected as the Prime Minister of Burma. The junta, who were sure they would win, immediately declared it invalid, saying that their authority was based on the "recognition" of the United Nations and countries that support their rule. The regime, to this day, has never allowed the elected parliament, led by PM Aung San Suu Kyi, to convene.
In July 1995, she was released, but was still under constant intimidation from the regime. Her husband, Dr. Michael Aris, discovered he had cancer a few years after his wife's release. Aris, who lived in Britain, was never allowed by the junta to see his dear wife one last time; he died in March of that same year.
In 2000, she was placed under house arrest again, but was freed in 2002. A year later, her convoy was attacked by a 2,000-strong junta-supported mob, which nearly killed her. The regime, using the incident as a reason, jailed Aung San Suu Kyi AGAIN.
After another 6 years of house arrest, from May to Aug. of 2009, she was jailed in the inhumane Insein Prison, where a huge number of political prisoners like her are detained. But after she was found "guilty" of breaking the terms of her imprisonment (although she did not do anything wrong), Suu Kyi was sent back to her home to spend another 18 months under house arrest.