A few years ago, amidst the Chik-fil-a 15 minutes of fame, someone tried to shoot up the Family Research Council's HQ in Washington, partly emboldened by the SPLC's putting them on their hate-group list. Bad publicity prompted the attack.
The same might be said of Friday's Colorado Springs shootings. Planned Parenthood hasn't ever been on conservative's dance card, but they climbed up the right-wing manure list recently with some videos documenting their selling of fetuses for research. That might well have prompted the shooting.
A law enforcement official also told the Associated Press that Richard Lewis Dear, 57, made a “no more baby parts” remark following his arrest in the deadly rampage Friday.
Dear appears to be both areligious and apolitical, but the baby-part meme had struck a chord.
A steady drumbeat of demonization in the media can lead less-stable folks to lash out. The case of a Knoxville Unitarian church getting shot up by a secular misfit who had it in for liberals comes to mind; he had been marinating in conservative punditry. The shooter in that case was 57 at the time, as is Deer, and both seemed to be "losers" in the eyes of the world.
The Knoxville guy took out his frustration on the quintessential left-wing church, while our Colorado Springs guy whacked at what seems to be the Holy of Holies to the modern left. The FRC shooter took on the religious right's center of power, only to be fended off by a security guard.
Conservative media outlets playing up the PP videos aren't to blame for the Colorado Springs shooting, the shooter is. However, when you demonize someone, you run the risk of a less-stable person going after said demon.