I'm so fucking tired of this easy answer.
Ignorance is not what makes people endorse fascism. It's disinformation. It's emotional manipulation. It's conservatism, as a worldview. There's a lot of really smart people who are gleefully participating in this ongoing atrocity. They have college degrees. They didn't get them from places run by Nazis. They didn't grow up blissfully unaware of World War II. If you explain to them, in detail, that this is what fascism is, and what they're doing is what Nazis were hanged for, they would simply generate excuses for how this is different and nuh uh and it's your fault.