Look it up. I think you will understand.
That entire quote is:
"There would be a rifle behind every blade of grass."
When you do a partial quote, it is hard to assess what someone is thinking, and I admit I have no special talents in correctly making those assessments. 😋
That is why I asked. Not sure I ever heard the quote, or if I did, paid much attention to it, because what you posted rang no bells. But at least with the full quote I would have understood what you meaning was. 🙂