Master of Study starred the actress who had a role as a political activist in what 2002 film?
Master of Study:  It starred Kim Su-ro, Bae Doona, Oh Yoon-ah, Yoo Seung-ho, Go Ah-sung, Lee Hyun-woo, Park Ji-yeon, Bae Doona:  She first became known outside Korea for her roles as a political activist in Park Chan-wook's "Sympathy for Mr. Vengeance" (2002), archer Park Nam-joo in Bong Joon-ho's "The Host" (2006), and as an inflatable sex doll-come-to-life in Hirokazu Koreeda's "Air Doll" (2009).
Sympathy for Mr. Vengeance