A Threat of the First Magnitude tells the untold story of the FBI informants who penetrated the upper reaches of organizations such as the Communist Party, USA, the Black Panther Party, the Revolutionary Union and other groups labeled threats to the internal security of the United States.

Praise for A Threat of the First Magnitude:

...a monumental contribution to our understanding of the FBI as a political police force whose principal task in the United States has been not just to monitor dissent, but to actively attempt to destroy it: Chip Gibbons, Jacobin

… Leonard and Gallagher turn a welcome spotlight on the informants who infiltrated deeply and likely illegally into radical political groups. – Scott Martelle, author of Blood Passion: The Ludlow Massacre and Class War in the American West

…a fascinating history that is also a prescient warning. After reading this book, I can’t help but wonder how things might have turned out if the government’s informants had never been members of the groups they helped destroy. – Ron Jacobs, author of The Way the Wind Blew: A History of the Weather Underground

Available at Amazon UK / Hive / Amazon US / Barnes & Noble / Indiebound.

Looking to buy  in an actual bookstore? The following spots are carrying it:

Esowon Books, L.A.
Skylight Books, L.A.
Bridge Street Books, D.C.
Book Ends LL, Kailua, HI
Prairie Lights Books, Iowa City
Seminary Co-Op Bookstore, Chicago
Carmichael's, Louisville
Red Emma
’s, Baltimore
Harvard Book Store Inc., Cambridge
May Day Books, Minneapolis
Prairie Books, Saint Paul, MN
Moon Palace Books, Minneapolis
Talking Leaves, Buffalo
Mac's Backs Paperbacks, Cleveland Heights
The Big Idea Bookstore, Pittsburgh
Elliott Bay Books, Seattle

Paperback ISBN: 9781910924709 ($14.95 US // $16.95 CAN)
eBook ISBN: 9781910924723 ($9.99 US &CAN)