Crowds packed the route and the square outside City Hall where the march celebrating the National Basketball Association champions was to end this afternoon.
Fans are being encouraged to wear any Raptors-related gear for the day.
"I actually have exams this week but being here is worth it", said 15-year-old Cypher Sabanal, whose mother let him skip school to attend the parade.
John Moreira said he made a decision to skip work to be a part of the moment.
"When the Raptors had their home opener on Halloween many years ago I decided to make this", said Mark, who stood outside Exhibition Place's Princes' Gates, where the parade will begin, waving a giant championship flag. The fanbase was able to see the small forward develop from an NBA All-Rookie First Team selection in 2012 to an NBA MVP finalist in 2015 and 2016.
RJ Salvador said he was "hyped" to be part of the massive celebration.
According to ESPN after the game "This is what I play for, " Leonard said.
Toronto Star reporter Bruce Arthur says the shots occurred way at the back of the festivities meaning many people are unaware that the shooting took place.
Others huddled near pillars in Nathan Phillips Square even as the team and several dignitaries - including Prime Minister Justin Trudeau - remained on stage.
A We the North flag flies in support of the Toronto Raptors at Charles Clark Square, Windsor, June 11, 2019.
Toronto police said officers were called to the scene on Bay and Albert streets, near the southeast corner of the Square, just before 4 p.m.
Officials at Maple Leaf Sports and Entertainment have said they hope 1.5 to 2 million people will be on hand for the parade.
Streets were closed off to accommodate the convoy carrying the Raptors, and three subway stations were also closed due to overcrowding on the street level. It's also the first major sports title Toronto has captured in over a quarter-century when the Blue Jays won the 1993 World Series. If not, how will you be celebrating today?