Growing up in Atlanta in the 1970s, Jonathan Weisman didn't think much about anti-Semitism. In fact, he didn't think much about being Jewish until 2016. That's when he, as deputy editor of the Washington Bureau of  "The New York Times," posted a quote from an op-ed about facism on Twitter. That tweet unleashed a torrent of anti-semitic images, threats and other forms of cyber-stalking that shattered his complacency.

Weisman used the tools of his profession to expose the trolls and the political, cultural and technological forces that have fueled an avalanche of attacks against Jews since 2016 - from online conspiracies to real-world violence, like the massacre of 11 people at the Tree of Life synagogue in Pittsburgh in October.

"On Second Thought" host Virginia Prescott speaks with Jonathan Weisman.

Weisman tracks the historic and present-day hatred in "Semitism: Being Jewish in America in the Age of Trump." He joined "On Second Thought" from Washington, D.C.