A young girl—who witnesses described as about 8-years-old—detonated a suicide bomb at a market in Nigeria this weekend, killing herself and at least five others. More than 40 were also injured in the bombing. Though no terrorist organization has formally claimed responsibility for the attack, it has the hallmarks of the work of Boko Haram, a radical Islamic militant group that is suspected of using abducted children in attacks of terrorism. The tragedy follows two other recent incidents of suicide bombings in Nigeria, including an attack that killed seven people at a bus station last week. In April of last year, the group became the center of the #BringBackOurGirls social media campaign after kidnapping more than 200 schoolgirls in a brazen attack on a local village …