Political Math tried to find and visualize the amount of violence associated with the pro-life movement in America.  I mean, these people are a menace, right?  Give me a break.  As PM remarks, a proper description of the Tiller murder would be this:

This incident has shattered an eight year lull in anti-abortion related
shootings, an activity that spiked to record levels in the 90ís.

Abortionstats4