The episode concentrates on diets and plant-based foods, and on the students at South Park's public school who are protesting the unhealthy food they are being fed, especially meat from animals.
A small group of protestors manages to convince the school to start serving healthy food, and when Eric Cartman discovers this he hyperventilates to the point of needing a defibrillator because he wants meat. After he is discharged from the hospital and sent back to school this issue comes up again and he states, "Their protesting is ruining my lunch!" The girls respond with, "We have a right to free speech!"
Eric: Yes, we do all have freedom of speech, but at times there are ramifications for the negative that can happen, when you're not thinking about others and you're only thinking for yourself!