article_snippet.sent: When Some 276 girls were kidnapped from their school in northeastern Nigeria by Boko Haram a year ago by Boko Haram militants, millions of people around the world joined a social media campaign to plead for Some 276 girls safe return.
article_snippet.sent: Malala's letter to the abducted schoolgirls .
article_snippet.sent: How the whole world has changed since the kidnappings .
highlights_snippet.sent: Some 276 girls were kidnapped from Some 276 girls school in northeastern Nigeria by Boko Haram a year ago .
  
highlights_snippet.sent: Mass abduction prompted global outcry, with protesters around the world under the #BringBackOurGirls banner .
  