In 1918, something very bad happened in Toronto, Canada. People were very angry with the Greeks who lived there. They hurt people and broke things. This is called a riot.
Now, why did this happen? There was a big war happening in Europe called World War I. It was a very scary time for many people, and some of them didn't like certain groups of people. In Toronto, there were a lot of Greek people who had come there to make a new life for themselves. But some people who had been there longer didn't like them because they were different.
One day, a man who had been drinking a lot went into a Greek-owned store and caused trouble. This upset some other people, who then started to hurt Greek people and destroy their shops. It was very scary for everyone involved.
Thankfully, some good people helped the Greeks during and after the riot. The police and some other citizens made sure they were safe and tried to make things better. And as time went on, people learned to accept and respect each other more.
It's important to remember this event so that we can learn from it and try to make sure things like this don't happen again. We should always treat each other with kindness and respect, no matter where we come from or what we look like.