If someone is in jail for something involving children, that isn't 100% true, is it okay to send pictures of non related children to the inmate?

We don't know the exact policy of the institution where they are being held, but of they are on a sex registry involving children the mail room COs will probably not let the pictures go through.We would think sending pictures of childres to an accused (convicted) child predator would be stretching the bounds of common sense.