Digital activism and the state: Media movements: civil society and media policy reform in Latin America, by María Soledad Segura and Silvio Waisbord, London, Zed, 2016, 224 pp., £70.00, (hardback), ISBN 9781783604630, £19.99, (paperback), ISBN 9781783604623, £19.99, (ebook), ISBN 9781783604654; Hybrid media activism: ecologies, imaginaries, algorithms, by Emiliano Treré, Abingdon, Routledge, 2018, 222 pp., £115, (hardback), ISBN 9781138218147, £22.50, (ebook), ISBN 9781315438177; Social media and politics in Africa: democracy, censorship and security, edited by Maggie Dwyer and Thomas Molony, London, Zed Books, 2019, 312 pp., £70.00, (hardback), ISBN 9781786994981, £19.99, (paperback), ISBN 9781786994974, £19.99, (ebook), ISBN 9781786995001; Digital media and the politics of transformation in the Arab world and Asia, edited by Carola Richter, Anna Antonakis and Cilja Harders, Wiesbaden, Springer, 2018, 195 pp., £39.99, (pbk), ISBN 9783658206994, £31.99, (ebook), ISBN 9783658207007