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:

SYMHC Classics: COINTELPRO 1
39:12

Behind the Scenes Minis: It's Not Unprecedented
16:46

The Rendition of Anthony Burns, Part 2
43:32