LikeWar by P. W. Singer and Emerson T. Brooking (Amazon Link).
This extremely well-written book details how social media has gone from a liberating tool of the suppressed (think Arab Spring) to a weapon of dictators (think Duarte), terrorists (think ISIS), and unscrupulous actors across the political spectrum. Along the way, the authors examine how “virality can overwhelm truth” and how the data and meta-data about what we post (when a post is made, where the poster is located, which filters are applied to a photo) can expose truths about our psychology and biases. And how we can be manipulated! These LikeWars can lead to real consequences and death. Not to mention accelerating the demise of our civic dialogue. I highly recommend this book to everyone. I have been assigning parts of it to my students. Here is an excerpt.

Amazon Link: