Thousands of poeple have protested in US cities overnight following the acquittal in Florida of George Zimmerman - the man who gunned down an unarmed black teenager.
President Barack Obama has appealed for calm after noisy rallies took place in New York, San Francisco, Boston, Detroit and Chicago.
He has appealed to people to accept the trial verdict saying "We are a nation of laws, and a jury has spoken"
The angry protests highlight simmering racial tensions - At least six people were arrested in Los Angeles early Monday when riot police broke up an "unlawful assembly" in Hollywood near the CNN building.
The most numerous rally Sunday was in New York City, where several thousand -- including families with children -- marched to Times Square under the watchful eye of police.
Sinead Spain reports
