How did the transformation of roman style slavery to feudalism take place in Europe? : AskHistorians
https://www.reddit.com/r/AskHistorians/comments/kfqu3q/how_did_the_transformation_of_roman_style_slavery/
Opinion | Another Way the 2020s Might Be Like the 1930s - The New York Times
https://www.nytimes.com/2020/04/28/opinion/coronavirus-amazon-wildcat-strikes.html