Violent clashes have broken out between police and protesters in LA in the wake of George Zimmerman's acquittal.
The LAPD said officers fired non-lethal bean bag rounds to disperse the crowd after protesters threw batteries and rocks at police.
Protesters have been marching on I-10 highway in the Crenshaw neighbourhood in southwestern LA.
In New York, Times Square has been closed to traffic to prevent a similar protests from getting out of control.
Mr Zimmerman, a neighbourhood watch volunteer, was cleared on Saturday of the second-degree murder of 17-year-old Trayvon Martin in Sanford, Florida.
The verdict has sparked protests in towns and cities all over the US.
Dr. Jamal Harrison Bryant, a pastor with the Empowerment Temple, spoke to Newstalk Breakfast:
Protestors in New York gathered even before the verdict was announced
While many people believe the jury got it right in deciding that Mr Zimmerman acted in self-defence when he shot Trayvon, many others believe it has again exposed deep racial divisions.
Some of the biggest demonstrations were staged in NY where thousands of people gathered in Union Square and then later in Times Square.
Videos on Twitter showed anger on the streets:
New Yorker Stacey Ann Chin said: "I have a black child growing up in New York City.
"And I felt like I had to get out of my house today, and motivate the household and get everyone out to come and show a presence, some evidence of resistance, some evidence of our displeasure or our aghast, unbelief about what has happened. "
Carmella Alston, also from New York, said : "I just know that my ancestors, my great-grandmothers, my grandmothers all marched before with Malcolm, Martin, Reverend Jesse Jackson, and even marched with Al Sharpton.
"And I didn't think at this age I will have to be going through this as well."
US President Barack Obama has called for "calm reflection" in the wake of Mr Zimmerman's acquittal.
"The death of Trayvon Martin was a tragedy. Not just for his family, or for any one community, but for America," Mr Obama said in a statement.
"I know this case has elicited strong passions. And in the wake of the verdict I know those passions are running even higher. But we are a nation of laws, and a jury has spoken."
Previously, he has talked about how Trayvon reminds him of his own kids:
A neighbour, who said she heard cries for help the night Trayvon died, has spoken to media:
