In Liberty, Rich Guns save lives. That's quite a stretch. Rich, words can incite violence. Words can be a contributing factor but no violence will occur unless it is through the conscious decison of a person. Even with those ther factors, it takes a violent ACT to physically harm you.
Words can promote suspicion, stereotyping, racist beliefs.
And the correct response to these things is more words, true words. And on the day someome convinces a tyrant to step down without first sharpening his own sword the cliche will become true. Until then it will remain a rallying cry for those who have been oppressed by a sword. It is still only indirectly that words can lead to harm. Even then it is more the lack of an opposing voice than the words themselves that we need to fear.