Flynn was a registered Democrat — what did he see under Obama to make him flip???
As one of the keynote speakers during the first night of the 2016 Republican National Convention, Flynn gave what the Los Angeles Times described as a "fiery" speech, in which he stated: "We are tired of Obama's empty speeches and his misguided rhetoric. This, this has caused the world to have no respect for America's word, nor does it fear our might";[69] he accused Obama of choosing to conceal the actions of Osama bin Laden and the Islamic State of Iraq and the Levant.[70] Flynn went on to criticize political correctness and joined the crowd in a chant of "U-S-A! U-S-A!". During the chants he told those in the audience, "Get fired up! This is about our country."[69][71]
During the speech, Flynn launched a blistering attack on Democratic nominee Hillary Clinton. He led the crowd in chants of "Lock her up!"; during one of those chants, he encouraged the crowd to keep it up, saying, "Damn right! Exactly right! There is nothing wrong with that!"[34] He called for Clinton to withdraw from the race, saying that "if I did a tenth of what she did, I'd be in jail today."[72][73] He repeated in subsequent interviews that she should be "locked up".[65] While campaigning for Trump, Flynn also referred to Clinton as the "enemy camp".[72] Six days after the speech, Flynn stirred up a controversy by retweeting anti-Semitic remarks, which he later apologized for and claimed were unintentional.[74] During the election campaign, Flynn used Twitter to post links to negative stories about Clinton, like the Pizzagate conspiracy theory.[75]