From the article:
> Coughlin saw things differently. He blamed Jews for their own persecution and claimed in the sermon that the Nazis had actually been lenient. Only a few synagogues were burned, he lied, adding: “German citizen Jews were not molested officially in the conduct of their business.” And communists, not Jews, were the real targets of the Nazi mobs, according to Coughlin.
Can you clarify, do you suspect this information is not accurate? Or you think it's not sufficient to judge the effect of Coughlin's broadcast and the matter needs to be "pursued further"? (How, what sort of pursuit, what would we be looking to find?) Or something else?
Coughlin wasn't secretive about what he believed, and he was banned from certain stations for exactly what he said on the radio, I think? I'm confused what sort of additional vetting you are suggesting should have happened, by whom. I could respect better an argument that it's worrisome when large corporations can ban people for their political views... but you are arguing that Coughlin's political views were misunderstood? Really? How so?
Or wait, from the first paragraph, that Coughlin wasn't really banned for what he said on the radio, but for... critisizing the local government? With what sort of critisism? You realize it wasn't actually the government that banned him, it was a choice of individual broadcasters not to broadcast him?