Alma 43:
47 And again, the Lord has said that: Ye shall defend your families even unto bloodshed. Therefore for this cause were the Nephites contending with the Lamanites, to defend themselves, and their families, and their lands, their country, and their rights, and their religion.
Didn't the supposed (I'd say fictional) characters within the Book of Mormon eventually wipe each other all out with millions dying because of these kind of family & tribal battles? And so what led to the eventual demise of them all is what you're advocating?
So, Mormonism does advocate violence.
Thanks for that little tidbit.