ISIS is The Islamic State of Iraq and the Levant, also known as the Islamic State of Iraq and Syria or Islamic State of Iraq and AL-Sham, Islamic State and by its Arabic language acronym Daesh.  ISIL originated as Jama’at al-Tawhid wal-Jihad in 1999, which pledged allegiance to AL- Qaeda and participated in following the 2003 invasion of Iraq by Western forces. The group proclaimed itself a worldwide caliphate and began referring to itself as the Islamic State or IS in June 2014. As a caliphate, it claims religious, political and military authority over all  Muslims worldwide.Its adoption of the name Islamic State and its idea of a cailphate  have been widely criticized, with the United Nations, various governments and mainstream Muslim groups rejecting its statehood .

Also is ISIS bad yes they are they are people who have a belief on a god and they also will kill people for their country,there belief on killing people is The caliphate that ISIS wishes to establish, however, is based on a distorted view of a past Islamic civilization. The group is modeling its empire off one that never truly also wants to establish a global Islamic state based on its beliefs, and will kill anyone that stands in the way.