Ferdinand Emmanuel Edralin Marcos Sr. was a Filipino politician and lawyer who served as the tenth president of the Philippines from 1965 to 1986. Marcos ruled the country as a dictator under martial law from 1972 to 1981, and with vastly expanded powers under the 1973 Constitution until he was deposed by a nonviolent revolution in 1986. Marcos described his rule's philosophy as "constitutional authoritarianism" under his Kilusang Bagong Lipunan. One of the most controversial figures in Filipino history, Marcos's kleptocratic regime was infamous for its corruption, extravagance, and brutality.