Yellow tape still cordoned off a section of the street the day after the Saturday attack, which occurred just steps from the main stage and amid music during the Salsa on St. Clair festival.
The victims were one man in his 20s and another in his late teens. Both were sent to hospital, one in life-threatening condition.
Despite of the violence, Marilyn Charria and several others returned to the festival on Sunday, refusing to let the first violent incident in the event's nine-year history to spoil their fun.
"I feel safe, totally safe," she said, as officers began their search for suspects. "Someone actually told me right before I came, and I was like 'If you're with the right crowd, you'll be fine.'"
Simone Francis said she didn't think twice about bringing her son with her, as the family makes the trip to the salsa festival every year.
"Stuff like that happens," she said. "You can't stay at home and be scared."
Investigators are looking for three male suspects, but have not yet released descriptions.