Giuseppina Pasqualino di Marineo (9 December 1974 – 31 March 2008), known as Pippa Bacca, was an Italian feminist artist who, together with a fellow artist, was hitchhiking internationally to promote world peace under the motto, "marriage between different peoples and nations", symbolically wearing a wedding dress during her trek.
Bacca was part of a world peace effort known as "Brides on Tour," for which she and fellow artist Silvia Moro had departed from Milan, Italy on 8 March 2008. The artists, wearing white wedding dresses, then travelled through the Balkans and arrived in Turkey on 20 March 2008. They had planned to hitchhike through the Middle East, their final destination being Jerusalem. Concerning their attire, they reported on their website that "That's the only dress we'll carry along — with all stains accumulated during the journey."
On her sister's hitchhiking plans, and in light of the discovery of her body, her sibling Maria stated to Italian news agency ANSA that "Her travels were for an artistic performance and to give a message of peace and of trust, but not everyone deserves trust... We weren't particularly worried because she had been hitchhiking for a lot of time, and thus was capable of avoiding risky situations... She was a determined person when it had to do with working for art."
Bacca and her companion split up just prior to arriving in Istanbul, planning to meet up again in Beirut. Bacca disappeared after 31 March. Her credit card was reportedly used at noon of that day. Bacca's naked, strangled and decomposing body was found near some bushes near Gebze, about 40 miles (64 km) southeast of Istanbul.
The man who led the police to her body, Murat Karataş, was detained and arrested after reportedly confessing to raping and strangling Bacca on 31 March after taking her in his Jeep from a gas station. DNA testing suggested that Bacca was raped by multiple people, and not just Karataş. The suspect said he was "under the influence of drugs and alcohol" and could not remember what happened.
He had been traced after he inserted his own SIM card into the victim's mobile phone—which alerted police, since he had a previous conviction for theft. Bacca's own information was wiped from the mobile device, implicating, according to the lawyer for Bacca's family, at least one other accomplice since Karataş could not speak English and left school after the third grade.