"....The current effort to demonize Planned Parenthood feels different. This is, literally, a manufactured issue, cobbled together from doctored videotapes and overheated accusations. The organization's activities have been so mischaracterized, and the practice of providing fetal tissue so overblown and so manipulated by lawmakers and politicians, that blame for the ensuing violence falls more heavily on them. This argument, I concede, rests on a potentially slippery and subjective slope. Holding advocates responsible for such unintended consequences risks dampening speech. Second, conservatives have blamed Black Lives Matter protesters for inspiring the killing of police officers; what makes my critique fair and...