Business owners in Edmonton were sweeping up broken glass Monday after rowdy crowds swept though a trendy shopping area of the city.
The trouble started a few hours after Canada Day festivities ended and the pubs along Whyte Avenue started closing at 2 a.m.
Hundreds of people spilled into the streets, blocking traffic. Outside one bar, a drunken fight broke out, and the crowd swelled to have a look.
Vandals eventually started breaking bottles and store windows.
They also threw rocks at buildings and police officers, overturned mail boxes and park benches, and kicked in phone booths.
Police used dogs, smoke bombs and pepper spray to disperse the crowd. Three officers were treated for minor injuries.
Edmonton mayor Bill Smith says he's "disgusted" with the crowd's conduct.
Sixteen people were arrested.
Damage along Whyte Avenue is estimated to be in the tens of thousands of dollars.