A Pew Research poll released Thursday found that 70% of Democrats think the government should restrict what appears on social media, a dramatic change from five years ago, when a majority of Democrats supported a free marketplace of ideas. Democrats are becoming the Censorship Party. It’s no wonder, considering the drumbeat of warnings from leftist politicians and their liberal media allies about “disinformation” and “misinformation.” But be warned: Democracy cannot survive for long if one of the nation’s two major political parties wants to put blinders on the public, limiting access to information and canceling political opponents. That’s a rigged...