That may be so... history is written by the victors.
I do know this: the path to success for any minority movement is the path to becoming accepted by the majority.
A growing violent movement gives a virtually infinitely powerful state legal and moral justification for wiping you out.
A peaceful movement gives the state no justification for stamping it out with force. It must be challenged at an intellectual level.
Sure the current media environment is manipulative... but it's nowhere near as bad as it was in the past. Watch national news from the 60s, you'll see what I'm talking about. Also we have the internet now, every falsehood the media spreads is immediate debunked and it seems they know that.
The truth can't be suppressed forever. As MLK said, "The arc of the moral universe is long, but it bends towards justice."
This is why I think non-violent resistance as a tactic is the best chance any movement has for success when normal legislative channels have failed.