Not sure about outside influences, may have more to do with underdeveloped amygdala than anything else. When faced with something that is counter to their beliefs (which is their identity) they experience it as an actual personal attack
>literally shaking right now
They are actually unable to step back, be dispassionate and look at evidence/facts etc.'
See
Touching the Raw Amygdala: An Analysis of Liberal Debate Tactics – Preface
https://www.anonymousconservative.com/blog/touching-the-raw-amygdala-an-analysis-of-liberal-debate-tactics-preface/
Read all the parts - it's fascinating and extremely helpful, especially in light of making memes and red-pilling