Americans angry with judicial injustice in the US have held mass protests in more than 100 US cities to show their discontent with clearing of George Zimmerman of murdering charge of unarmed black teenager Trayvon Martin.
A poll in the United States has proved almost one in four African American men are unsatisfied with police behavior over the past month.
Angry demonstrators have staged protests rallies in several cities in the United States following the acquittal of George Zimmerman, who shot and killed Trayvon Martin, 17.