"You're brown, you're brown," the woman responded. "You're all attacking me because I'm white."
Peel Region, which includes Mississauga, is one of the most ethnically diverse parts of Canada. The federal government's 2011 National Household Survey found that visible minorities comprise 54% of Mississauga's population, with people of South Asian descent making up the bulk of that figure.
Peel Region police said officers were called to the Rapid Access to Medical Specialists clinic shortly after noon on Sunday.
"Police spoke to all involved parties," Constable Mark Fischer told BuzzFeed News. "A resolution was found that had the female’s son checked by a doctor at the clinic."
Fischer said there were no charges laid. The clinic declined to comment.
BuzzFeed News was unable to identify the woman in the video. Her face has been obscured to protect her son's privacy.