Several passengers who perished on flight MH17 were HIV researchers en route to a conference in Melbourne, where they believed their discussions could end the AIDS epidemic. “There was a real sense of profound optimism going into this conference,” The Nation’s executive editor Richard Kim told Chris Hayes on All In Friday. One researcher in particular who was aboard the flight, Joep Lange, believed that the medical community possessed the necessary knowledge required to end AIDS—they only lacked the resources. “That struggle, to get the political will and human resources—that was Dr. Lange’s entire life. He was not just a brilliant researcher and scientist. He was an activist,” said Kim.

—Hannah Harris Green