Some 276 girls were kidnapped from their school in northeastern Nigeria by Boko Haram a year ago . The militants have been blamed for the deaths of more than 200 people since they began attacking schools and churches last year. Isha Sesay : We should all feel shame that our collective attention span is so fleeting .
Some 276 girls were kidnapped from their school in northeastern Nigeria by Boko Haram a year ago . Despite a global outcry , one year on , only a handful have escaped and returned home . Isha Sesay : We should all feel shame that our collective attention span is so fleeting .