Rome, May 13 - Italy's far-right Forza Nuova party launched an Internet campaign on Monday called 'Immigration Kills', referring to the recent rape and murder of a young woman in Livorno and a pick-ax killing spree committed in Milan on Saturday, both by non-Italians living in the country. The campaign warns against reforms proposed by recently appointed Integration Minister Cecile Kyenge, Italy's first black minister, that would grant children born to immigrants living legally in Italy automatic citizenship. The recent acts "nail proponents of immigration reform to their responsibilities...and provide dramatic reasons against its applicability," the group said on its site. Mada Kabobo, an undocumented immigrant, killed two men and injured three others in a string of attacks before being stopped by police on Saturday in Milan. Ablaye Ndoye, a Senegalese national, was arrested on May 3 for suspicion of raping and murdering 19-year-old Ilaria Leone, found strangled to death outside the port city of Livorno. Kyenge has received a spate of racist insults since her appointment. "Shoot Minister Kyenge, not Carabinieri" and "Minister Kyenge, f**k off" were found daubed on walls in the Tuscan city of Pistoia, signed by Forza Nuova supporters. The first taunt referred to a man who shot two Carabinieri outside the premier's office while Democratic Party (PD) deputy head Enrico Letta's new left-right government was being sworn in nearby. On Thursday Forza Nuova party hung a banner outside the PD offices in the Marche city of Macerata that read: "Kyenge go back to Congo". Italian prosecutors have opened a probe into online abuse directed at PD member Kyenge, a doctor who was born in the Democratic Republic of Congo. As well as anonymous attacks on the Internet, the 48-year-old Kyenge was also targeted by a senior member of the anti-migrant Northern League. League MEP Mario Borghezio called Letta's new executive a "bonga bonga government" and claimed Kyenge would seek to "impose her tribal traditions from the Congo". An online petition has been launched calling for Borghezio to be ousted from the European Parliament.