Thank you Mr. Porter for your attempts to bring the Bigger picture to your students.  It is a Valuable experience & worthy of your Efforts.  It is "Not" unfortunate that the other 2 Ignored your idea & the third LoPresti did not see Interrupting an Educator was Rude & Indignant ! or Ignorant !  
& Here Is the Civil Lesson greater than you could've Imagined !  When Politicians have / want Only their Agenda to be Heard & discussed.  They have No interest in Education & the Growing need for youth to be Heard & Understood !  That ! to me Is the Lesson !  Courage Mr. Porter, & Proceed to Educate your students in Spite of the Obvious.  To Give them Your Best !  But also plant the Seed of Truth in the Lesson they just Witnessed *  'imua