“But men whose personalities fell within normal parameters had set in motion the Nazi outrages, making Kelley worry that they could happen again. “With the exception of Dr. Ley, there wasn’t an insane Joe in the crowd,” he told a reporter for the New Yorker. The leaders “were not special types,” he wrote. “Their personality patterns indicate that, while they are not socially desirable individuals, their like could very easily be found in America” or elsewhere. Consequently, he feared that holocausts and crimes against humanity could be repeated by psychologically similar perpetrators.”