malekind has always both justified and delimited its own excesses by fetishizing killing and especially dying for a cause but if karma yoga (surrendering of the fruit of ones action and offering the action itself to God) isnt being done and atonement isnt made then living and dying by the sword usually creates bad samskaras, inauspicious karma and poor rebirths. God sees nothing special in man dying (and especially spurns killing) for his own or another mans causes, and is very reticent to accept violence for His own sake. when Jesus said "he who lives by the sword dies by the sword" he meant they thus become ineligible for eternal life. Krishna was pro war for natural warriors in righteous wars, but the kurus field is also called dharma khestra-- the field of dharma, meaning the conflict of the Mahabharata is taken as both a literal history and as an allegory for the battle of good against evil which is like a war.
people who take lives also cannot be said to fit the ideal of a martyr who dies for what they believe in. dying in an act of vengeance for the murders they committed, they reap what they have sown and should not be celebrated. dying for God is very different than killing for God, for ones life and ones belongings should be given to God but not others lives. dying for God is just an extension of living for God for the saints. for violent people prone to violence, they neither truly live nor truly die for God, instead living and dying to sate either their own violence projected onto God or for a God who loves violence and thus is not God.
antiviolence is so often denigrated by violent inclined and angry people as only useful to keep villains in power, but I'd argue that any cause that uses excessive violence will just create a cycle of vengeance and recriminations leading to its downfall, whereas true antiviolent liberation movements like that of india can create great lasting popular support. ahimsa being deeply rooted in Indian religion, it will hopefully become a huge part of our emerging multipolar world.