High school student Felipe Sanhueza, 18, rests inside a classroom during his hunger strike, along with four other students, in Buin, Chile, Tuesday Aug. 23, 2011. Sanhueza said he has been on a hunger strike for 35 days. The sign at left reads in Spanish "Free education now." Chile's largest union coalition, representing about 13 percent of the work force and many government employees, are calling for a strike for Wednesday and Thursday to join forces with high school and university students who have boycotted classes for three months now. They want to replace Chile's dictatorship-era constitution, which concentrates vast power in the presidency, with a new charter that enables popular referendums and makes free education a right for all citizens. They also want pension reforms, a new labor code and more investments in health care. (AP Photo/Roberto Candia)