March 23, 2012 -- Updated 1725 GMT (0125 HKT)

Obama vows to find out how unarmed teen was shot

U.S. President Barack Obama said the killing of unarmed black teenager Trayvon Martin in Florida should prompt national "soul-searching" and vowed to establish the facts. FULL STORY

Obama: 'This is a tragedy'
Watch leader just 'a regular guy'
Psychiatrist: Shooter 'paranoid'
Why wasn't killer charged?

FRENCH VIOLENCE

PM defends handling of Merah arrest
Could more have been done?
Final moments | Who was Merah?
Close look at French raid | Timeline
Shooter filmed horrific attacks

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Opinion: Black people distrust police

Journalist LZ Granderson says he has been repeatedly harassed by police in the U.S and argues that the shooting of Trayvon Martin demonstrates similar injustice. He explains why black people do not trust the police. FULL STORY