Americans angry at the acquittal of George Zimmerman over the death of black teenager Trayvon Martin have marched in US cities, with reports of sporadic acts of violence.
Spontaneous marches of varying sizes erupted in cities throughout Saturday night including San Francisco, Chicago, Washington, Atlanta and Philadelphia.
A jury in Sanford, Florida late on Saturday found Zimmerman, a volunteer neighbourhood watchman, not guilty of shooting dead Martin, a 17 year-old unarmed teen on the night of February 26, 2012.
The trial has riveted the nation for weeks, and emotions came to a boiling point as news of the verdict spread.
Prominent rights activists like Jesse Jackson appealed for calm.
“Avoid violence, it will lead to more tragedies. Find a way for self construction not deconstruction in this time of despair,” he wrote on Twitter.
Martin’s parents have long called for non-violent demonstrations, quoting civil rights icon Martin Luther King and the Bible.
Several hundred demonstrators marched peacefully amid a heavy police presence in downtown San Francisco soon after the verdict. Many carried signs with slogans such as “The people say guilty”.
Hours later angry protesters marching through Oakland – just across the bay from San Francisco – spray-painted cars and smashed windows, helicopter video footage posted by the Oakland Tribune showed. One vandalised vehicle was a police cruiser.
In Chicago, to the cry of “No justice, no peace! No racist police!” a crowd of activists held a noisy downtown rally, the Chicago Tribune reported, while protesters gathered at Times Square in New York City to vent their anger.
Los Angeles police declared a “citywide tactical alert” when some 200 demonstrators gathered at a park in a historical black neighbourhood to demonstrate, but police later told local media that it was as a precaution, and that there had been no acts of violence.
In Washington, dozens of mostly African-American youths marched chanting slogans in a city neighbourhood. They were followed closely by patrol vehicles, an AFP journalist reported.
A crowd of several hundred gathered all day on Saturday outside the courthouse in Sanford, Florida – and many were outraged when the verdict was read.
“It’s the end of our justice system,” said Ashton Summer, a 20 year-old Puerto Rican. “Justice is not equal for everyone.”
The ANSWER coalition, which helped organise large protest rallies during the Iraq war, said it would hold marches on Sunday in seven US cities, as well as three separate ones in New York.
“We are very saddened by the jury’s verdict,” said Martin family attorney Benjamin Crump after the verdict was read. “The family is heartbroken.”
Rights activist Al Sharpton posted a statement on Facebook describing Zimmerman’s acquittal as “a slap in the face to the American people”.
“We intend to ask the Department of Justice to move forward as they did in the Rodney King case and we will closely monitor the civil case against Mr Zimmerman,” said Sharpton.
Rodney King was an African-American man who was beaten by Los Angeles police following a car chase in April 1991. The beating was videotaped and aired on television, sparking widespread outrage.
Days of violent rioting and looting broke out in Los Angeles when the police officers involved in the beating were acquitted in April 1992.