Yes, this is really tricky, because nowadays we have people shouting from the rooftops continuously, and half of them are shouting the exact opposite thing as the other half. WWII was openly racist, so from a modern perspective it would be easy to recognize and condemn some of the early behavior, but these days it's more about dog whistling and thought crimes. Probably the signs we would all recognize are not going to happen. But we have already moved a dramatic amount in terms of normalized behavior, from 20 years ago.