The draft board raids were part of an antiwar movement, largely grounded in Catholic religious convictions, that spanned almost four years. Part one covers the basic context of the Vietnam War and why the U.S. was involved in the first place, and the earliest raids on draft boards.
Research:

Behind the Scenes Minis: Paddles and The British Museum
31:02

Ashurbanipal
37:29

Six Impossible Episodes: Back-to-Court
41:15