Purple Thursday, also known as Wear Purple Day, is observed in the United States and Canada every third Thursday of October during Domestic Violence Awareness Month. This annual awareness campaign aims to highlight the connection between domestic violence and traumatic brain injury (TBI). The color purple became associated with domestic violence awareness in the 20th century, initially linked to the women’s suffrage movement, where it represented purity, hope, and loyalty. The inaugural Domestic Violence Day of Unity was held in October 1981, and since then, the campaign has expanded to include Purple Thursday. Participants are encouraged to wear purple clothing or accessories to foster discussions about domestic violence and support survivors. Organizations involved focus on educating both the public and professionals, such as first responders and healthcare workers, about the symptoms and impacts of TBI in domestic violence situations.