Seven minutes into the recording, Brian references a study regarding the hard-right groups posting more junk news than all other groups combined. Here is the source (page eight).
A bit more than eleven minutes into the recording, Brian references a report that Facebook relaxed its rules for certain right leaning personalities. Here is the source (first two paragraphs).
Twelve minutes into the recording, Brian references an investigation into Facebook policies led by a former Republican politician. Here is the source (page 10).
Thirteen minutes into the recording, Colin references a report of anonymous sources stating conservative stories were being removed within Facebook. He also talks about the high number of employees that support Democrat candidates. Here is the source (page six).
Around the minute 35:30, Brian references a study that shows greater amplification of right wing tweets. Here is the source.
If you are interested in reading more on the topic, here are the sources we used for the conversation.
NYU False Accusation: The Unfounded Claim that Social Media Companies Censor Conservatives
Why The Right Wing Has A Massive Advantage On Facebook
Algorithmic Amplification Of Politics On Twitter
Here is a link to the YouTube video.