Trump-Hitler comparisons risk boomeranging on Democrats 

“I understand very well why it is wrong to compare Adolf Hitler’s Third Reich to any other movement,” former Democratic presidential nominee Al Gore conceded Monday as he rallied a crowd during San Francisco’s Climate Week.

“It was uniquely evil, full stop. I get it,” he added.  

Then came the “but.”  

“But there are important lessons from the history of that emergent evil,” Gore said as he quoted Nazis who wrote that the first step in coming to power in Germany was...