The hazards of attending school in the United States

So if you were the parent of a child who attended an American school, which of these incidents would you find most threatening to the health, safety, and moral development of your child?

This:

A seventh-grade geography teacher who refused to remove Chinese, Mexican and United Nations flags from his classroom was placed on paid administrative leave Wednesday by Jefferson County officials who were concerned that the display violates the law.

This:

Art Teacher Loses Job After Kids See Nude Sculpture
Children Were On School-Approved Field Trip

FRISCO, Texas -- An award-winning Texas art teacher who was reprimanded after one of her fifth-grade students saw a nude sculpture during a trip to a museum has lost her job.

Or this:

Student and Gunman Die in Colorado High School Standoff

DENVER, Sept. 27 — A gunman and a teenage girl he had taken hostage in a high school southwest of Denver both died Wednesday as a SWAT team stormed a classroom in an attempt to save the student and the man opened fire, shooting her and then himself, the police said.

Summing up:
- Display of flags from countries other than the United States in a geography classroom: Not OK, treasonous, unpatriotic, anti-American.
- Exposure to nude sculpture while on a school-approved field trip to an area art museum: Not OK, shocking, morally degenerate, disgusting.
- Easy access to guns for any crazed lunatic off the street: OK, no problem.

May I take this opportunity to publicly give thanks yet again because I and my daughter live in Slovenia and not America. Thank you.