Student Protection or Discrimination Education?

I worried for the freedom of all U.S. citizens as I watched this news video about new screening devices installed in a Texas High School; not to ban firearms (which would make a whole lot more protection-sense) but to outright ban and/or assign security-escorts to ex-sex offenders that come to the school, the vast majority of whom are parents of attending students! I wonder if the guard holds their arms while they walk down the hallways. One school policy is definite: RSO's won't ever be allowed to eat in the cafeteria with first-class citizens. KAMR TV sums up their so-called "investigative" report with some light humor.