Catalan inventor Narcís Monturiol fought for ideals like equality, freedom, and progress in the midst of a lot of social and political chaos in 19th-century upheavals in Spain and Catalonia. And then, he built submarines.
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