USFS (and alikes) safety?

USFS campgrounds aLand between the Lakes in Kentucky are some of the better ones. We feel as safe there as anywhere. And much safer than in some private campgrounds. But it depends a lot on where you are going. In most campgrounds, with other RVs around, are some of the safest places around, because people look out for each other. I wil be the first to admit though, we have seen places that not only would I not leave anything unprotected, I wouldn't ever get out of the rig! The only time we have ever been worried was in a state park campground when we were the only ones there in a remote, and DARK area!