said: "This was not the Mona Lisa. It is regrettable that we have lost it, but it was an honest mistake by our cleaners in removing tagging graffiti." The loss of these and other famous street artworks in Melbourne reignited a decade long debate over heritage protection for Melbourne's street art. Planning Minister Justin Madden announced government plans in 2010 involving Heritage Victoria and the National Trust of Australia to assess street art in key locations throughout Melbourne and for culturally significant works to receive recognition for the purpose of preservation. Examples of street art pieces that have been added to the Victorian Heritage Register include: the 1983 mural outside the Aborigines Advancement League building, and a 1984 Keith Haring mural in Collingwood. The Melbourne City Council acknowledged the difficulties that hinder the preservation of street art, with their graffiti management plan for 2014–18 stating: "Protection of street art is not practical. The only exception may be especially commissioned works". Events Empty shows: illegal exhibitions held in derelict buildings since circa 2000 Stencil Festival: The first stencil art festival in the world was held in Melbourne in 2004. It was held annually until 2010. Street video projection event: video projection events were held in Gertrude Street, Fitzroy in mid-2008. Melbourne Stencil Festival The Melbourne Stencil Festival was Australia's premier celebration of international street and stencil art. Since its inauguration in 2004 the festival has become an annual event, touring regional Victoria and other locations within Australia. The festival was held for 10 days each year, involving exhibitions, live demonstrations, artist talks, panel discussions, workshops, master classes and street art related films to the general public. It featured works by emerging and established artists from both Australia and around the world. Since its inception, the Stencil Festival featured some 800 works by over 150 artists, many of whom were experiencing their first major art exhibition, finding it difficult to be exhibited in major commercial galleries reluctant to display emerging art forms. The first Melbourne Stencil Festival was held in a former sewing factory in North Melbourne in 2004. 2004 – The inaugural festival was held over three days in a warehouse in North Melbourne. 2005 – Featured a ten-day exhibition at the refurbished Meat Market art complex. The festival was supported by the City of Melbourne and saw more than 700 visitors on the opening night. 2006 – The festival moved