Democrats have moved swiftly to use the Jan. 6 U.S. Capitol mayhem to push for a frightening expansion of federal surveillance and police powers under their sole control for two years, smearing anyone who voted for Donald Trump as a potential terrorist. Joe Biden himself called the Capitol protesters “domestic terrorists” and “insurrectionists” and said his administration will prioritize legislation to increase federal crackdowns on what Democrats consider to be “domestic terrorists.”The main problem with that is that Democrats openly link Republican Party affiliation and mainstream conservative ideas to “domestic terrorism,” “extremism,” “white supremacy,” and other evils. To the left...