ShareTweet Like Submit Plus May 17, 2018 Featuring Gerald P. O'Driscoll Jr. Download:mp4 Sign up for the Multimedia email newsletter:
![Tanja Porčnik presents her co-authored report "The Human Freedom Index 2017" at the Republikon Institute](https://object.cato.org/sites/cato.org/files/styles/multimedia-listing/s3/multimedia/2018/porcnik-republikoninstitute-9-20-18.jpg?itok=LadJVuDU "Tanja Porčnik presents her co-authored report "The Human Freedom Index 2017" at the Republikon Institute")
![Jacob T. Levy gives a lecture on "The Concept of Liberty" on C-SPAN 3's American History TV](https://object.cato.org/sites/cato.org/files/styles/multimedia-listing/s3/multimedia/2018/levy-cspan3-9-19-18.jpg?itok=HnXAxnyE "Jacob T. Levy gives a lecture on "The Concept of Liberty" on C-SPAN 3's American History TV")
