"If ghandi, while still remaining non-violent, vocally supported, or at least refrained from condeming militant resistance groups, how much stronger would the movement have been?"
Ok, I'm sorry, but that's just an IDIOTIC statement.
If - and remember this is the 1940s here, we're not talking today's sensibilities - had condoned violent acts, the brits would have tarred and feathered him, locked him up and thrown away the key. The reason nonvoilence worked was because the colonial authorities had *no response* that was not an overreaction. Allowing himself to be linked to those who acted violently would have given the authorities the *perfect excuse* to move on him.
I fully grant you I could write this out better, and cite more evidence to back up my viewpoint, but, just, JESUS, did you even *think* before you wrote that??