Contemporary U.S. politics, especially after the 2016 election, have become more polarized than they ever were, with political candidates reflecting this. President Trump was one of the most inflammatory candidates ever to run for President, and on the left, polarization has proceeded as well, if more slowly—Trump, and before him, the Tea Party, is the face of the mainstream Republican Party, whereas more extreme left-wing figures such as Alexandria Ocasio-Cortez and Bernie Sanders ar...