just ask your asthma specialist about dupixent. returning to our top story tonight. as president biden engages over 100 nations in a virtual summit to promote democracy, his challenge won't be just combatting the messages of authoritarian media machines abroad but the autocrat apologists here at home. john avlon is here tonight with a reality check. >> democracy versus autocracy is the defining fight of our time. and the biden administration's democracy summit is a sign of solidarity against that rising tide of autocracy. we'll see what concrete commitments emerge or whether it's a lot of diplotalk, but the need is right. after all, democracies have been in retreat for over a decade. as autocracies pitch the promise of wealth without liberty. predictably, china and russia