Yesterday Michelle Malkin wrote a piece of propaganda that would be worthy of a totalitarian state. Her headline 
The Left's Escalating War on Military Recruiters says it all. In fairness, if Malkin were writing about the escalating violence at abortion clinics, would she write a op ed titled "The Right's Escalating War on Abortion Providers"?
She lists 19 events. All property crime, one bomb. Most of it is dumb college students throwing red paint on army recruiters and recruiting stations. I am not in favor of such things. These groups are misguided. They should direct their free speech at the policy makers, not 20 year sargeants who do most of the recruiting.
Here is a list of extremist violence (some rightly would call the politics of these folks as "right wing") directed at abortion clinics and providers: (All from Wikipedia, but I confirmed these in other sources as well, I just like the format of the Wiki site)
Murder
In the U.S., violence directed toward abortion providers has killed 7 people, including 3 doctors, 2 clinic employees, a security guard, and a 
clinic escort.
[5]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 the year before. 
Michael F. Griffin was found guilty of Dr. Gunn's murder and was sentenced to life in prison.
June 29, 1994: Dr. John Britton and James Barrett, a clinic escort, were both shot outside of another facility in Pensacola. Rev. 
Paul Jennings Hill was charged with the killings, received a 
death sentence, and was 
executed September 3, 2003.
December 30, 1994: Two 
receptionists, Shannon Lowney and Lee Ann Nichols, were killed in a clinic attack in 
Brookline, Massachusetts. 
John Salvi, who prior to his arrest was distributing pamphlets from 
Human Life International,
[6] was arrested and confessed to the killings. He committed suicide 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 died when his workplace was bombed. 
Eric Robert Rudolph, who was also responsible for the 1996 
Centennial Olympic Park bombing, was charged with the crime and received two 
life sentences as a result.
October 23, 1998: Dr. 
Barnett Slepian was shot dead 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 Dr. Slepian's murder after finally being apprehended in 
France in 2001.
Attempted murder, assault, and threats
According to statistics gathered by the 
National Abortion Federation (NAF), an organization of abortion providers, since 1977 in the 
United States and 
Canada, there have been 17 
attempted murders, 383 
death threats, 153 incidents of 
assault or 
battery, and 3 
kidnappings committed against abortion providers.
[8] The attempted murders were:
[9][10][5]August 19, 1993: Dr. 
George Tiller was shot outside of an abortion facility in 
Wichita, Kansas. 
Shelley Shannon was charged with the crime and received an 11-year prison sentence.
June 29, 1994: June Barret was shot in the same attack which claimed the lives of James Barrett, her husband, and Dr. John Britton.
December 30, 1994: Five individuals were wounded in the same-day shootings which killed Shannon Lowney and Lee Ann Nichols.
December 18, 1996: Dr. Calvin Jackson of 
New Orleans, Louisiana was stabbed 15 times, losing 4 pints of blood. Donald Cooper was charged with second-degree attempted murder and sentenced to 20 years.
[11]October 28, 1997: A physician whose name has not been revealed was shot in his home in 
Rochester, New York.
January 29, 1998: Emily Lyons, a 
nurse, was severely injured in the bombing which also killed Robert Sanderson.
September 11, 2006 David McMenemy attempted a suicide bombing of a women's clinic in Davenport, Iowa after scouting targets throughout the Midwest. It was later revealed that the targeted clinic did not perform or make referrals for abortions.
Anthrax threats
The first letters claiming to contain 
anthrax were mailed to U.S. clinics in October 1998, a few days after the Slepian shooting, and since then, there have been a total of 655 such 
bioterror threats made against abortion providers. None of the "anthrax" in these cases was real.
[12][9]November 2001: After the genuine 
2001 anthrax attacks, 
Clayton Waagner mailed 
hoax letters containing a white powder to 554 clinics. Waagner was convicted of 51 charges relating to the anthrax scare on December 3, 2003.
Arson, bombing, and property crime
According to NAF, since 1977 in the United States and Canada, 
property crimes committed against abortion providers have included 41 
bombings, 173 
arsons, 91 attempted bombings or arsons, 619 
bomb threats, 1630 incidents of 
trespassing, 1264 incidents of 
vandalism, and 100 attacks with 
butyric acid ("
stink bombs").
[8] The first clinic arson occurred in 
Oregon in March 1976 and the first bombing occurred in February 1978 in 
Ohio.
[13] More recent incidents have included:
[5]October 1999: Martin Uphoff set fire to a 
Planned Parenthood clinic in 
Sioux Falls, South Dakota, causing 
US$100 worth of damage. He was later sentenced to 60 months in prison.
May 28, 2000: An arson at a clinic in 
Concord, New Hampshire on resulted in damage estimated at US$20,000.
October 1, 2000: A Catholic priest drove his car into the Northern Illinois Health Clinic after learning that the FDA had approved the drug 
RU-486. He pulled out an ax before being shot at by a security guard.
June 11, 2001: A bombing at a clinic in 
Tacoma, Washington on destroyed a wall, resulting in US$6000 in damages
July 4, 2005: A clinic 
Palm Beach, Florida was the target of an arson.
December 12, 2005: Patricia Hughes and Jeremy Dunahoe threw a 
Molotov cocktail at a clinic in 
Shreveport, Louisiana. The device missed the building and no damage was caused. In August 2006, Hughes was sentenced to six years in prison, and Dunahoe to one year.
April 25, 2007: A package left at a women's health clinic in 
Austin, Texas contained an explosive device capable of inflicting serious injury or death. A bomb squad detonated the device.
[14]May 9, 2007: An unidentified person deliberately set fire to a 
Planned Parenthood clinic in 
Virginia Beach, Virginia.
[15]December 6, 2007: Two unidentified persons set fire to a Planned Parenthood clinic in 
Albuquerque, New Mexico.
[16]What Malkin is doing is trying to link a few extremists with an entire political perspective. Using that ridiculous logic, the above is far more discrediting of the rightist political perspective than college pranksters.