Unity Day continued to gather support from individuals, schools, and celebrities. Anderson Cooper wore orange on his TV show, "Anderson Live", and promoted the event. Unity Day was started by PACER's National Bullying Prevention Center as a signature event of National Bullying Prevention Month. The call to action was to "Make it Orange and Make it End. Unite Against Bullying!" Participants were encouraged to wear orange to show their support for bullying prevention. Ellen DeGeneres participated in Unity Day in 2011 by wearing orange on her TV show, "Ellen", and posting about the event on her website. Anti-Bullying Day originated in Canada in 2007, and is a day when people wear a pink, blue, or purple shirt on Feb. 27th, to stand against bullying. The United Nations declared the official anti-bullying day as May 4, starting in 2012.