Campaigners are calling for a national march in the U.S. to protest against what they say is police violence.
It's after a grand jury decided not to indict a white officer who put an unarmed black man in an apparent chokehold while arresting him in New York.
Eric Garner's death's drawn comparisons to the fatal police shooting of Michael Brown in Ferguson, Missouri.
Eric's widow Esaw says her husnand should still be alive
U.S. Attorney General Eric Holder's urging protesters to stay calm:
