Simplify the following text for a Grade 5 native English-speaking person.
Original: However , Wiccans have encountered hostility from some politicians and Christian organizations , including former president of the United States George W. Bush , who stated that he did not believe Wicca to be a religion . According to the history of Wicca given by Gerald Gardner , Wicca is a survival of the European witch-cult that was persecuted during the witch trials .
Simplified: People who follow Wicca are called `` Wiccans . ''