Constable James Forcillo was taken into custody after a brief session, while his lawyer Peter Brauti said he hoped for a bail hearing later in the day.
Sammy Yatim, 18, was alone on a stopped, downtown streetcar at 12:30 am (local time) on July 27, knife in hand, when police asked him multiple times to drop his weapon, according to witnesses and an amateur video posted on YouTube.
Nine shots were eventually fired, killing the young man of Syrian origin who arrived in Canada five years ago with his family.
The Special Investigations Unit, a provincial agency that probes civilian deaths involving police, laid the second-degree murder charge against Forcillo yesterday.
Yatim's family in a statement asked for a broader investigation.
"Over 20 uniformed police officers were present and no one stepped forward to stop the gun shots or offer any mediation. Moving forward we expect complete transparency and accountability," it read.
A six-year veteran police officer, Forcillo was shocked by the charges, police union president Mike McCormack told reporters outside the courthouse.
Asked about the impact of the accusations on overall police morale, he added: "We're disappointed. It's never good when we have one of our officers charged, especially with a charge like second degree murder.
