As US, Israeli and Iranian leaders trade bombs and threats, this episode will help remind you one reason why Iran's government learned to detest the US long ago: The US and Britain secretly ran the plot to topple its leader in the 1950s. Why? For Iran's oil. Filmmakers Taghi Amirani and Walter Murch discuss their riveting documentary, Coup 53 - which shows step by step how the CIA and MI6 carried it out. Nations are like people: once they've been traumatized, it's hard to forget.

As we post this episode, Trump has sent Marines and Army National Guard troops to the streets, to try to quash protests by fellow citizens - the vast majority of them peaceful. Our guest Elizabeth Gotein, of the nonpartisan Brennan Center for Justice, has warned us before that any U.S. president could wield dozens of sweeping emergency powers to dismantle democracy, some so secret that members of Congress don't even know about them. We repeated Liz's episode last year and we're repeating it again: The crisis created by Trump and his allies is that serious.

Hitler and the Nazis assaulted universities, museums and art institutions; purged them of people that Hitler perceived as enemies; and rewrote textbooks and museum exhibits to tell Hitler's (fake) version of history. Sound familiar? Historian Joan Clinefelter, who just retired from the University of Northern Colorado, says that there are major differences between Hitler in his early days and Trump. "But I think they have the same ultimate goal," Clinefelter tells us, "which is ideological purity, sort of a cultural cleansing of history [and] of culture - so that it only gives the message that they believe is appropriate - and getting rid of anybody who has any sort of dissenting point of view."