The title Heavyweight refers to the author's great grandfather, who was a boxer, but also to the heft of Brager's relationship with the Jewish holocaust. I know Solomon Brager from zine cultures and as an anti-Zionist Jew. Those two identities inform this graphic historiography, as does their PhD work in gender studies.  I don't think I've ever read a smarter graphic book, and that includes the works of Alison Bechdel.