Crimes typically associated with ritual violence include: trespassing, vandalism, church desecration, theft, graffiti, arson, extortion, suicide, kidnapping, ritual abuse, animal sacrifice, and ritual murder. Trespassing related to ritualistic crime usually involves persons entering private areas such as woods, barns, and abandoned buildings for the purpose of having an isolated place to worship. Since most occult theologies are nature based, rituals are frequently held outdoors and altars are often constructed of natural elements. Vandalism most often associated with occult crime includes cemetery and church desecration. The most common types of cemetery desecration attributed to occult groups are digging up graves, grave robbing, and tampering with human corpses or skeletons. This is frequently motivated by religious beliefs that require human bones to fulfill specific rituals.