On Monday a grand jury decided against the indictment of U.S. officer Darren Wilson who had fatally shot 18-year-old Michael Brown on August 9, 2014. Thousands of people found the judgement unacceptable and got involved in violent confrontations with police officers on Monday night.

Ferguson saw a night of violence as fires kept burning until dawn. Police officers arrested several protesters who got allegedly involved in riots. Police cruisers were set on fire, windows were smashed and stores were looted as officers fired tear gas and non-lethal munitions at crowds in response. The Wall Street Journal reported that at least two dozen buildings had been ablaze by morning.

Brown's death has been a point of debate since August when he was fatally shot by Wilson, a white police officer. The grand jury decision on the case became symbolic with justice, policing and racial discrimination. There were several protests against police allegedly being "racists" as the victim was of African-American origin.

Protests had become at times during summer but it escalated on Monday after the grand jury decision had been made public. Police started using tear gas, smoke canisters and nonlethal shotgun against protesters hours after there had been reports of buildings being set on fire and stores being looted. While the National Guard had already been activated by Missouri Governor Jay Nixon ahead of the grand jury decision on Tuesday, additional troops were deployed to the city later. The grand jury, consisting of 12 members in the panel, did not find any probable cause behind charges like involuntary manslaughter and first-degree murder. It decided not to indict the alleged officer after hearing testimony from around 60 witnesses for more than 70 hours.

USA Today reported that demonstrators had taunted officers and shattered windows while they set fire to a couple of St. Louis County police vehicles. According to St. Louis County Police Chief Jon Belmar, at least 150 gunshots were heard as a dozen buildings were set on fire. None of the gunshots were fired by police, he said. Belmar said that a police officer had been shot but his condition was not serious.

Contact the writer: s.mukhopadhyay@ibtimes.com.au