Brandon Dail, whose social media profiles describe him as a user interface engineer in Seattle, wrote on Twitter that he was dismissed for publicly challenging a colleague's silence on the controversy that prompted a rare staff protest at Facebook.

In the interest of transparency, I was let go for calling out an employee’s inaction here on Twitter. I stand by what I said. They didn’t give me the chance to quit 😅 https://t.co/zMw8ARMwZt

— Brandon Dail (@aweary) June 12, 2020

Dozens of employees, including Dail, abandoned their desks and tweeted objections to Zuckerberg's handling of Trump's posts. Trump's posts included the racially charged phrase "when the looting starts, the shooting starts" in reference to protests against racism and police brutality held after the May 25 killing of George Floyd, a black man who died in police custody in Minneapolis.

Twitter affixed a warning label to the same post, saying it glorified violence. Facebook opted to leave the post untouched.

Read also: Facebook in turmoil over refusal to police Trump's posts

Zuckerberg stood by his decision at a tense all-hands meeting with employees that week. During the meeting, Dail tweeted that it was "crystal clear today that leadership refuses to stand with us".

Dail again voiced objections this week after both Facebook and Twitter declined to take action against a Trump post that contained an unsubstantiated conspiracy theory about Martin Gugino, a 75-year-old protester who was critically injured by police in Buffalo, New York.

"Trump's attack on Martin Gugino is despicable and a clear violation Facebook's anti-harassment rules. It's again extremely disappointing that we (and Twitter) haven't removed it," he said.

Facebook and Dail did not immediately respond to requests for comment.