Italian authorities have detained 15 people who they believe killed 12 others simply because they were Christians. The 15 Muslims who were arrested were among 105 migrants from North Africa on a rubber boat, attempting to cross the Mediterranean Sea to Europe. Witnesses told authorities that the 12 victims were targeted and thrown overboard because of their faith. The vessel was intercepted by the Italian navy. Others on the boat said they formed a human chain after they opposed the murders …