The Harry Potter Alliance (HPA) consists of more than 100,000 members who support several causes including Doctors for Health, Free Press, and The Gay-Straight Alliance. This movement, which was established in 2005 by its non-profit leader Andrew Slack, parallels Harry Potter's endeavors to combat Voldemort to the broader society's goals to challenge dominant power structures that oppress marginalized groups. The HPA has been active in its strides toward providing financial relief toward populations in need. For example, following the 2010 Haiti Earthquake, the HPA assembled to raise approximately $123,000 to provide five cargo planes that supplied medical resources to the country following this momentous event. The HPA also organizes its members into four Hogwarts houses to strengthen group solidarity and encourage members to spread awareness about social and political issues. Like in "Harry Potter", these houses compete to earn points based on their abilities to inspire change and encourage direct action.