Violence is the gold standard. You should probably look up the Robert Heinlein starship troopers quote on that.
If you don't think violence has solved anything I'd ask you to go have a conversation with the survivors of Hiroshima and nagasaki.
However it is when good people use violence in good ways that the world gets changed.
Simply having wishful thinking isn't going to change the world.
violence is the absence of love and only love can heal this world. It is a truth that will set this world free - but yes, unfortunately too many people are still stuck in the "violence is good" etc. mind set. Until then we will perpetuate hell on Earth