By Martha Quillen This year’s Fourth of July celebrations will likely be less boisterous than usual because Americans are ailing. Coronavirus, however, may not be the most serious challenge facing us this year. This spring, President Trump was being his belligerent self, threatening to shut down Congress, blaming Obama for the pandemic, and revoking health care for trans-gendered Americans. Now Joe Biden is following in his footsteps. In mid-June, Biden declared he would pressure Mark Zuckerberg to regulate Facebook’s political content, a call for censorship that’s every bit as audacious and autocratic as Trump’s troubling tactics. Biden started criticizing Facebook ...