Non-violence is a very non-functional approach

Standard take by the young and impatient. If you take the path, the system gets to respond with force immediately and justify it. India's independence and the US civil rights movement were largely successfully thanks to the public and repeated showing of who the bad guys were by letting them abuse and perpetuate violence against rationally speaking unarmed opponents.

Also, if such a movement of violence is successful against the oppressive power, you then have those who are more than capable of violence in power trying to say "ok no more violence" and suddenly de-escalating to get to the desired peace. History has shown it's not often successful and that a faction of purists within the revolutionaries often continue in violent extremism even after the "battle is won". Peaceful revolution is much slower but much, much more likely to be sustainable.