For two centuries there has been bipartisan agreement that American democracy depends on free speech. Alas, more and more, the modern Democratic Party has abandoned that commitment and has instead been trying to regulate the speech of the citizenry.

We have seen President Obama publicly rebuke the Supreme Court for protecting free speech in Citizens United v. FEC; the Obama IRS inquire of citizens what books they are reading and what is the content of their prayers; the Federal Communications Commission proposing to put government...