He is also a founder of the “Decolonizing Architecture Art Residency”which gathered architects, artists, activists, urbanists, filmmakers, and curators to work collectively on politics and architecture. Petti’s participation in contemporary art exhibitions–among them the Biennale di Venezia, Istanbul Biennial, Home Works Beirut, Bienal de São Paulo, Marrakech, Qalandia and the Asian Art Biennial–have had practical implications for architectural interventions in the refugee camps. In 2014 the Shu’fat School for Girls was inaugurated as an expression of the dignity and strength of the refugee community living in overcrowded camps. A “Concrete Tent” erected in the Dheisheh camp in 2015 embodies the contradiction of the permanent temporariness of Palestinian refugees.