Over 170 cities across the US have been disrupted by protesters angered by a grand jury’s not to indict the police officer who killed a black teen. More than 40 people were detained overnight as police ordered the rallies off the streets.

New York saw the largest rally, with thousands gathering in Manhattan, Union Square. The demonstrators chanted “No justice, no peace” and held signs “Jail killer cops” and “Justice for Mike Brown.”

Some protesters disrupted traffic, marching between the lanes, with security forces following them.

NYPD Commissioner William Bratton stated they were giving the crowds “breathing room” while they are “non-violent” and don’t “engage in issues that cause fear or create vandalism,” as quoted by AP.

The rally has been mostly peaceful, with only two detentions.

In Newark, New Jersey, a few hundred people also marched peacefully.

RT