Obama Suggests Trump Akin to Hitler: '60 Million People Died...You've Got to Pay Attention and Vote'

Obama moved from that to talking about a nativist mistrust and unease that has swept around the world. He argued that such things as the speed of technical change and the uneven impact of globalization have come too quickly to be absorbed in many cultures, bringing strange new things and people to areas in which "people didn't (used to) challenge your assumptions." As a result, "nothing feels solid," he said. "Sadly, there's something in us that looks for simple answers when we're agitated."

Still, the U.S. has survived tough times before and will again, he noted, particularly mentioning the days of communist fighter Joseph McCarthy and former President Richard Nixon. But one reason the country survived is because it had a free press to ask questions, Obama added. Though he has problems with the media just like Trump has had, "what I understood was the principle that the free press was vital."

The danger is "grow(ing) complacent," Obama said. "We have to tend to this garden of democracy or else things could fall apart quickly."

That's what happened in Germany in the 1930s, which despite the democracy of the Weimar Republic and centuries of high-level cultural and scientific achievements, Adolph Hitler rose to dominate, Obama noted. "Sixty million people died. . . .So, you've got to pay attention. And vote."

Obama said his greatest "regret and disappointment" was the failure to enact tighter controls on gun possession. Though the issue resonates in far different ways with different parts of the population, "something is broke," Obama said, his own voice breaking, as he talked about 6-year-old girls shot to death at Sandy Hook, girls not too different in age from his own daughters.