Zuckerberg hired Joel Kaplan as Facebook’s VP of public policy to shape political speech policy. Kaplan was a former clerk for Antonin Scalia, a lawyer for W. Bush during the 2000 recount and eventually his chief of staff[1]. Kaplan regularly intervened to stop enforcement of terms of service violations for, as you said, “one political side”[2]. He also successfully advocated to _not_ update Facebook’s recommendation algorithm to promote neutral, non-political content because it would make Facebook appear bias against conservatives[3]. Despite all of this “one political side” continues to claim they are unfairly targeted.

[1] https://en.m.wikipedia.org/wiki/Joel_Kaplan [2] https://www.wired.com/story/facebook-joel-kaplan-washington-... [3] https://www.wsj.com/articles/facebook-algorithm-change-zucke...