A new book by David Horowitz and Richard Poe has enraged the Left and alarmed many conservatives. It exposes the machinations of a radical clique working at the highest levels of government and finance to undermine American power. That book is The Shadow Party: How George Soros, Hillary Clinton and Sixties Radicals Seized Control of the Democratic Party. It hit the New York Times bestseller list in its first week in print. Here to tell us about The Shadow Partyis co-author Richard Poe, our esteemed colleague at the David Horowitz Freedom Center, where he serves as director of research. Mr....