"The election in the States is not even a week in the rearview mirror and already people are feeling empowered enough to post such hate," Kevin Kerr told BuzzFeed Canada.
He said his children's caregiver saw the poster near a park on the way to school with Kerr's son. He said it made him worry for his family and his community.
"East York is a pretty diverse community, and it is shocking to think that someone could be so emboldened to post this."
Kerr said he had contacted his city councillor and that he wants to see people come together in response to the posters.
"We have to accept the fact that this kind of hate is not uniquely American," he said. "We need a community response to deal with it."
A spokesperson for the Council of European Canadians, the only identifiably Canadian website listed on the posters, said the group had nothing to do with the posters' distribution.
"[W]e had nothing to do with poster and CEC does not identify itself as alt-right, but as pro-Trump," Ricardo Duchesne said in an email to BuzzFeed Canada.