Video: St. Louis Protesters Burn American Flags Over Officer-Involved Shooting (UPDATE: Knife Thrown at Officers, Arrests Made)

Protesters in St. Louis burned American flags on Thursday night as unrest was reignited following the fatal officer-involved shooting of 18-year-old Vonderrit D. Myers, who police say opened fire on an off-duty officer.

VIDEO (@Yamiche): Protesters in St. Louis burn American flags following fatal officer-involved shooting Wednesday https://t.co/OTRF5sO1aU

— TheBlazeNOW (@TheBlazeNOW) October 10, 2014

Protesters are now burning American flags. https://t.co/I9j4xHoif5

— Yamiche Alcindor (@Yamiche) October 10, 2014

Burning flag is now being waved by protester. https://t.co/ACIsshDC7R

— Yamiche Alcindor (@Yamiche) October 10, 2014

The protesters chanted "no justice, no peace!" and "hands up, don't shoot!" as they waved the burning American flags.

The Myers shooting comes two months after a Ferguson officer killed Michael Brown, setting off intense national debate over law enforcement treatment of minorities.

Police say Myers was shot Wednesday after he opened fire on a white, off-duty officer, but Myers' parents say he was unarmed. Some activists and lawmakers say Myers was targeted because he was black and are asking the Justice Department - which has opened a civil rights investigation into the death of Brown, who was unarmed - to investigate his shooting.

Check out more updates from the St. Louis protests:

#shawshooting Protester just broke out glass doo of Medicine Shoppe at Grand and Hartford pic.twitter.com/ijkiR19FBq

— Paul Hampel (@phampel) October 10, 2014

#shawshooting Protesters blocking Grand at Gravois. Kicked a car that tried to get through. pic.twitter.com/vlu4UZqLZX

— Paul Hampel (@phampel)

October 10, 2014

St Louis Police storm in on protestors at Grand and Arsenal. Some protestors hit with pepper spray. #KMOV pic.twitter.com/p0KkC5PCLD

— Matt Sczesny KMOV (@KMOVMatt) October 10, 2014

Knife that was thrown at police officer at Grand and Arsenal. #kmov pic.twitter.com/FAcOttbCtD

— Matt Sczesny KMOV (@KMOVMatt) October 10, 2014

RIGHT NOW: @ChiefSLMPD says a knife was thrown at officers, hit one in the shoulder. 2 arrests so far #shawshooting pic.twitter.com/xlgbmv1aSn

— Alexis Zotos (@alexiszotos) October 10, 2014

The Associated Press contributed to this report.