"The Justice League and the Suicide Squad--the World's Greatest Heroes and its worst--went to war. A team unlike any other rose from the ashes. Batman. Black Canary. Vixen. The Atom. The Ray. Killer Frost. Lobo. Some are heroes, some are villains and some exist in the gray area in between. But the Caped Crusader sees the potential in all of them to show everyday people that their superhuman guardians are just like them: capable of fighting for justice...

"For several years, Andrew Marantz, a New Yorker staff writer, has been embedded in two worlds. The first is the world of social-media entrepreneurs, who, acting out of naïvete and reckless ambition, upended all traditional means of receiving and transmitting information. The second is the world of the people he calls "the gate crashers" -- the conspiracists, white supremacists, and nihilist trolls who have become experts at using social media to...