Why? Do you deny that they happen?
but (raw, off wiki, a part of a long list):
March 10, 1993: Dr. David Gunn of Pensacola, Florida was fatally shot during a protest. He had been the subject of wanted-style posters distributed by Operation Rescue in the summer of 1992. Michael F. Griffin was found guilty of Gunn's murder and was sentenced to life in prison.
July 29, 1994: Dr. John Britton and James Barrett, a clinic escort, were both shot to death outside another facility, the Ladies Center, in Pensacola. Rev. Paul Jennings Hill was charged with the killings. Hill received a death sentence and was executed on September 3, 2003. The clinic in Pensacola had been bombed before in 1984 and was also bombed subsequently in 2012.
December 30, 1994: Two receptionists, Shannon Lowney and Lee Ann Nichols, were killed in two clinic attacks in Brookline, Massachusetts. John Salvi was arrested and confessed to the killings. He died in prison and guards found his body under his bed with a plastic garbage bag tied around his head. Salvi had also confessed to a non-lethal attack in Norfolk, Virginia days before the Brookline killings.
January 29, 1998: Robert Sanderson, an off-duty police officer who worked as a security guard at an abortion clinic in Birmingham, Alabama, was killed when his workplace was bombed. Eric Rudolph admitted responsibility; he was also charged with three Atlanta bombings: the 1997 bombing of an abortion center, the 1996 Centennial Olympic Park bombing, and another of a lesbian nightclub. He was charged with the crimes and received two life sentences as a result.
October 23, 1998: Dr. Barnett Slepian was shot to death with a high-powered rifle at his home in Amherst, New York. His was the last in a series of similar shootings against providers in Canada and northern New York state which were all likely committed by James Kopp. Kopp was convicted of Slepian's murder after being apprehended in France in 2001.
May 31, 2009: Dr. George Tiller was shot and killed by Scott Roeder as Tiller served as an usher at a church in Wichita, Kansas.
November 29, 2015: A shooting at a Planned Parenthood clinic in Colorado Springs, Colorado, left three dead and several injured, and a suspect Robert L. Dear was apprehended. The suspect had previously acted against other clinics, and referred to himself as a "warrior for the babies" at his hearing. Neighbors and former neighbors described the suspect as "reclusive", and police from several states where the suspect resided described a history of run-ins dating from at least 1997. As of December 2015, the trial of the suspect is on going; however, on May 11, 2016, the suspect was declared by the court incompetent to stand trial.
Clicking on the names of the perpetrators shows that pretty much all of them were inspired by their Christian beliefs.
You can't judge Christians by the actions of these murderers, just as you can't judge Muslims by the actions of Mohammed Kadir; and in that case, the victim was a Muslim as well.
