TORONTO — A parade celebrating the Toronto Raptors’ N.B.A. championship transformed the team’s hometown into a party venue on Monday before it was briefly swept into panic and confusion by a shooting that left four people wounded and two people taken into police custody.
The incident went initially unnoticed by the crowd squeezed into Nathan Phillips Square, the plaza in front of Toronto’s modernist City Hall, about the time Prime Minister Justin Trudeau of Canada and other dignitaries were congratulating the team on its title, the first for an N.B.A. team based outside of the United States.