“How do you suppose to eradicate them?”
I’d start with the professoriate. All of the leftist crap flows downhill from them. They invent the mind-twisting dogma, and they manufacture the endless stream of new leftist drones from the universities. These include, especially, the teachers who indoctrinate our kids and the journalists who spread their propaganda and lies.
Start with the universities. Break up those evil temples of leftism.
Ah yes! Universities! Cut off their public funding. Left them live on their Endowments and compete in the real world