Deception — particularly that which comes from accounts with massive followings — around COVID-19 is something that Twitter is taking increasingly seriously. While misinformation on the platform is rampant, the sort of lies that put lives at risk seems to be the tipping point for the Tech Giant. 

Trump, his confidante Rudy Giuliani, and now his son, have all been penalized by Twitter in recent months for pushing information that was either blatantly false or false in a manner that could get someone killed. From reporting via The Washington Post, Liz Kelley, a spokeswoman for Twitter, told the publication that Trump Jr.’s tweets were in violation of the “covid-19 misinformation policy” that the company has been closely abiding to.

The President addressed the video in a press briefing, and seemed far less confident than usual in his reproach towards Twitter, “There was a group of doctors yesterday, a large group, that were put on the internet and for some reason the internet wanted to take them down and took them off. […] I don’t know why, I think they’re very respected doctors. […] maybe they had a good reason, maybe they didn’t, I don’t know.”

Facebook, which has been more adamant in steering clear of this hands-on approach to censoring disinfo, took rare action by scrubbing the Trump Jr.-shared video site-wide. Youtube did the same.
You can read the full WaPo piece and see more ways that tech giants are wading into the 2020 election here.