A Muslim convert from Brooklyn has pleaded guilty to using a website he founded to post online threats against the creators of the "South Park" television show and others he deemed enemies of Islam

In court papers filed with his guilty plea, Jesse Curtis Morton, 33, admitted that his Revolution Muslim website served as an outlet for al-Qaida propaganda and that he used the site to post thinly veiled threats not only against "South Park" creators Matt Stone and Trey Parker but against others whom he considered to be enemies of Islam. Morton, who also uses the name Younus Abdullah Mohammad, worked closely with Zachary Adam Chesser, who was sentenced to 25 years in prison for the "South Park" threats and other crimes. Morton left the United States and took a teaching job in Morocco days after Chesser's July 2010 arrest, fearing he, too, would be charged. He was arrested in Morocco and has been in custody since then, mostly in solitary confinement at the city jail in Alexandria. Morton and Chesser's cases differ in significant ways, though. Chesser, in addition to threatening the "South Park" creators, also tried twice to travel to Somalia to join the terrorist group al-Shabab. On his second attempt he boarded an international flight with his infant child in tow, hoping his travel would appear less suspicious if he was accompanied by a baby. The case against Morton rests solely on actions he took as founder and operator of Revolution Muslim. While the site was running, Morton took steps to portray its posts and commentary as solely informational or analytical, not intimidating and threatening. For instance, when he posted the first issue of the al-Qaida magazine Inspire on his site in 2010, he posted a disclaimer saying it "should not be deemed that we are displaying any advice or support, material or otherwise, for any institution deemed illegal or terroristic by the U.S. government and its thought police." The magazine included instructions on how to make a bomb and an explicit call from al-Qaida cleric Anwar al-Awlaki for the assassination of Seattle cartoonist Molly Nelson, who had proposed "Everybody Draw Muhammad Day" in response to the controversy over the 2010 "South Park" episode, which depicted the prophet Muhammad in a bear costume. Many Muslims consider drawings of Muhammad to be offensive, and Nelson was forced to go into hiding. Morton and Chesser worked closely on crafting statements in response to the "South Park" controversy that they thought would be legally permissible but still convey a clear threat that would encourage others to take violent action against the show's creators. The statements "predicted" that Stone and Parker would meet the same fate as Theo Van Gogh, a Dutch filmmaker who was murdered in 2004 for making a movie that was perceived as insulting to Islam. Chesser had earlier posted a photo of Van Gogh's corpse along with the address of Comedy Central, where "South Park" airs, and a suggestion that readers "pay a visit" to Stone and Parker. Neil MacBride, U.S. attorney for the Eastern District of Virginia, said that Morton's whole intent in operating Revolution Muslim was to inspire people to engage in violent jihad. Following the "South Park" controversy, Morton and Chesser discussed the fact that "Revolution Muslim" had become the 68th most searched term on Google and looked for ways to capitalize on their exposure, according to an FBI affidavit. The court documents include a long list of people convicted of terrorist activity who were regular readers of Revolution Muslim's materials. They include Colleen LaRose, also known as "Jihad Jane," who was convicted in Philadelphia of terrorism-related offenses; Antonio B. Martinez, who was convicted in Baltimore of plotting to bomb a military recruiting station; Jose Pimental, who sent an email to Revolution Muslim saying he was a "big fan" and was later charged in connection with a plot to kill U.S. military members returning from Iraq and Afghanistan; and Samir Khan, a U.S. citizen who became an al-Qaida propagandist and was killed in the airstrike that also killed al-Awlaki. "In some ways the 'South Park' threats were probably the least significant of the things that were happening" with Revolution Muslim, said Assistant U.S. Attorney Gordon Kromberg, who prosecuted the case. Chesser and Morton are among several so-called "homegrown terrorists" who have been prosecuted locally and across the nation. Brenda Heck, special agent in charge of the counterterrorism unit at the FBI's Washington field office, said that investigating sites like Revolution Muslim will remain a priority for the bureau because of the threat they pose in potentially radicalizing U.S. Muslims and inspiring them to commit acts of violence.