This column originally appeared in the January 27th print edition of National Review: America is a land of acronyms, and, useful as they are, acronyms can quickly curdle into jargon. SLAPP stands for "strategic lawsuit against public participation" — i.e., using legal action to cow an opponent into silence, and withdrawal from the public square. It was coined in the Eighties by Penelope Canan and George W. Pring at the University of Denver, and in the Nineties they turned it into a book: SLAPPs: Getting Sued for Speaking Out. And it proved so influential that by the Oughts various jurisdictions...