The history of the world has been violence since the beginning.
The world we live in now is no less dangerous than that of the 1800's or any other time frame you might choose.
the only thing that changes are the weapons of choice. Rocks, clubs, knives, bows & arrows, flintlocks, six shooters, Sharpes rifles, tommy guns, glocks, AK's, bombs, cannons.... doesn't matter....
People will always have disagreements that lead to bloodshed, and bad people will always try to do evil to good people, and good people will always seek to defend themselves from the deeds of the bad and evil people. That's just the way it is.
I love watching a good western movie.
Violence was part of that history...... for better or worse. We can not change what was before, but perhaps we can learn from it and not repeat it? Hopefully?