Is the point of the title of this thread for Canada to adopt the US ban on Syrian refugees?
This is what everyone is dancing around here, and why people have posted the questions to you they have. The wording of this thread title is ... this is the first, implying there will be more. If there will be more, well how do we stop it, etc, tc.
The next question is why do we not post about every sexual assault that happens in this country, why is this one singled out?
Is it a horrendous crime? Yes. Should people like this be allowed in the country? No. So, are you suggesting all Syrian's shouldn't be allowed in Canada because we now have a "first" Syrian refugee who did this?
If tomorrow an immigrant from Ireland does this, are you going to post a thread saying "First Sexual Assault by an Irish Immigrant in Canada"? Probably not.
So yes, this is a tragedy and shouldn't happen. Lock the guy up and / or throw him out of the country. The title you chose frames it in a certain light, and it makes people question the motivation of the thread.