The Warren Times Observer published an ad that said, "May Obama follow in the steps of Lincoln, Garfield, McKinley and Kennedy". An astute observer, an even a not so astute observer, may realize that all four of those presidents were assassinated. Basically, the ad is professing a hope that Obama get assassinated. The paper has "apologizes for the oversight" and is helping the secret service with their investigation.
More at http://www.philly.com/philly/wires/ap/news/state/pennsylvania/20090529_ap_panewspaperadcallsforobamaassassination.html.