The organization, not the concept. More on [1] this story. "In German court, accused denies Islamic Jihad exists," from [2] Europe News, June 26:

Frankfurt - One of two Muslim men on trial in Germany for supporting a terrorist group denied Friday that the group, the Islamic Jihad Union (IJU), exists.

Omid S, a 28-year-old Afghan-born German citizen, told the Frankfurt court on the first day of his trial that he was not guilty because there was no such group.

The indictment says Omid S attended training camps run by the shadowy group, which operates from the wilds of Afghanistan or Pakistan and is allied to al-Qaeda.

The other accused, 27-year-old Turkish national Huseyin S, identified himself but exercised his right to remain silent about the charges and evidence against him...