Conspicuously missing in Facebook whistleblower dumps is any hint of worry about left-wing hate and lies

As whistleblowers continue to dump documents revealing internal Facebook discussions about controlling content, one thing is striking: The thousands of pages released so far contain zero signs of staff worries about (or even awareness of) left-wing hate speech and misinformation.

Perhaps we’re only seeing part of the picture. But Facebook staffers’ incessant drive to censor right-wing stories and sites suggests they really are blind to the often-outrageous speech from outlets on the other side of the spectrum.

The Wall Street Journal’s blockbuster report this week detailed how the social-media giant’s “employees have consistently pushed to suppress or de-platform...