Culture of violence: what does that mean?

Writers search for voice and commitment. It is important to me to bring those two things together. The authenticity of voice roots itself in a stand one takes, a space where one situates oneself, a vantage point from which the writer looks out on the world and tries to articulate what one sees there.

And for me, this other point - to tell the truth about it. I don't just mean factual or objective truth, but truth that rests in the integrity of what one sees, interprets, describes. The reason why writing and art are so endlessly rich is because in this sense truth is as varied, diverse, and dynamic as the world in which we live.

Okay, to the topic here. A question: relevant to a reflection on the meaning of the phrase "culture of violence," what, at its heart, is the difference between these two stories?