Twitter, the social media network, allows for discourse to occur via the website on replied twitter threads. This particular thread contained discussion concerning Trump's realtor practices as it concerns redling and the HOLC maps of NYC zoning.
Shertzer, Allison, "There has been a lot of interest in “redlining” in economics recently. Here is a thread on my new paper with @econtrout, @jessicalavoice, and Price Fishback on the construction of the HOLC maps, which hasn’t received a lot of attention in economics", November 30th, 2020, 10:00 am. https://twitter.com/econhist_allday/status/1333425696614453256?lang=en