Parenti's kid is a lib too iirc
When you live in the imperial core and your own material conditions are comfortable, you have to really make a conscious effort to break left, and you have to also understand that while you may be arguing for a slight worsening in your own conditions, you're arguing for a drastic improvement for many others. Coupling that with how American/western countries really try to beat into you that you're on your own/you are an individual against society, well...you have to beat your own self interest and the aggressive, constant barrage of brainwashing