11 Years Ago ISIS brutally executed 21 Coptic Christian Workers on a Libyan beach.On February 15, 2015, after kidnapping them in Sirte (mostly poor Egyptian migrant laborers supporting families back home, plus one Ghanaian), ISIS-Libya forced the 21 men—dressed in identical orange jumpsuits, hands bound—onto a desolate Mediterranean shore near Tripoli.The high-production propaganda video, titled "A Message Signed with Blood to the Nation of the Cross," shows black-masked jihadists marching them