Adam Peter Lanza referred to himself as an Anarchist (probably of the Anarcho-Primitivist type) and in the Anarchy Radio on 11/12/2011 call he openly went against the concept of civilization.
During the call Lanza said that humans are born in a "chimp-like state" (Without any kind of influence from society) and that people are conditioned into living in a civilized state.
Wouldn't murdering small children, which are in the process of learning how to live in a civilized state and that are part of the new generation, that will make this civilized state go on, be an extreme act of political protest ?
It's not the first time that other mass murderers murdered a group of young people for political reasons, here some examples:
-Fjotolf Hansen (Formerly called Anders Behring Breivik); 33 of the victims were less than 18 years old, most had less than 30 years old.
-The 34 terrorists of the Beslan school siege; 186 of the victims were children.
-The 6 terrorists of the 2014 Peshawar school massacre; 134 of the victims were children.
This is just speculation, politics might have not been his main reason for the massacre (Which could have still been a symbolic act of violence, knowing that Adam P. Lanza did attend Sandy Hook Elementary School) and many other factors (Such as mental health) played a role in his actions.
-I am sorry if I did grammatical mistakes (English is not my main language) and if I wasn't clear enough.