digitally enabled social change" activism in the internet age" university of arizona professor jennifer earl. thank you for your time . >> one thing i tell people when maybe we should get some blood test not because i am a former physician but i believe it is my right to say why? because when doctors are ordering test why don't we ordered them so the question now should be why? so that requires a mineshaft i like to say my mom goes to the doctor i saw my doctor and they're really like her but did not even order a blood test so maybe the answer is to wait but not jump in all the time. but then when it is time then i say to my physician whose computer is programmed to say please send it to the commercial labs that i know better in a network because they may charge $10 for the exact same test that a hospital with charge 500 or $1,000 it you and i both know that they both put tubes of blood into a machine that spits out numbers. . >> i would like to know how much influence you have president obama had as far as who could challenge hillary clinton if that candidate would have had a fair chief dan

joining us now is professor jennifer earl, her book "digitally enabled social change: activism in the internet age". first about what you do hear? >> , professor of sociology where i teach and research about social movements, particularly digital activism and the study of repression which is how private actors try to control protests. >> let's start with the digital half of this. what is a tactic that you write about in your book? >> the book we introduced is cowritten by katrina porter and i and what we were trying to do is really highlight the wide variety of ways in which people use digital tools for activism. a lot of times we think about digitally enabled social challenges using digital media to turn people out to off-line events. inc. about the support that happens for instance for the women's march. that is one popular way of thinking about the impact of digital activism or digital media on activism, but in the book katrina and i wanted to look at it a different way that people use tools which is to actually engage in activism online, so think about online petitions, online let

joining us now is professor jennifer earl, her book "digitally enabled social change: activism in the internet age". first about what you do hear? >> , professor of sociology where i teach and research about social