Last night, President Obama got to say almost everything that’s really on his mind during the White House Correspondents Dinner—with a little help from his anger translator, Luther, played by Keegan-Michael Key. When Obama said, “Protecting our democracy is more important than ever. For example, the Supreme Court ruled that the donor who gave Ted Cruz 6 million dollars was just exercising free speech,” Luther explained, “Yeah, that’s the kind of speech like this, ‘I…