You can tell when an argument hits home by the number of trolls it brings out on social media. When I recommended Thom Hartmann's article linked below two days ago, posting excerpts from it, a number of trolls immediately came out of the woodwork.
Hartmann's argument is essentially one that anyone who takes what happened with Nazi Germany and the Holocaust seriously doesn't dismiss lightly: It can happen here.
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https://hartmannreport.com/p/what-will-happen-to-everyone-who