“There is a dangerous undercurrent dragging Americans who wade into the political waters out toward the extreme.” Oliver Darcy wrote these words after 66% of Iowa Republicans said they did not think Joe Biden legitimately won the 2020 election in a CNN entrance poll on caucus night. Darcy tells Audie Cornish why he thinks the mainstream media has a duty to shine a light on the “propaganda machine supporting Trump.” Sign up for CNN's Reliable Sources newsletter Oliver’s column, A dangerous undercurrent is pulling Americans toward the political extreme. The media is turning a blind eye to it Learn more about your ad choices. Visit podcastchoices.com/adchoices