I'm sure it doesn't seem to be fair to many people, but on the other hand, those kinds of cases that you've described—and there have been some; I've been personally involved in them—are very few indeed. It is a misfortune, in many respects. As I mentioned before, there isn't any case I know of when you're removing someone from Canada that people aren't hurt by it. However, if you're a 23-year-old man and you know you might be removed if you're convicted of an offence over six months, then you shouldn't commit the crime.
Remember, these people who have been charged with a crime, the sentence for which would be more than six months, have the right of appeal to the courts. We're not sentencing them to jail. In most cases we're sending them back to their own country. We're not doing anything except removing them from our country because they haven't lived up to the obligations they should have.
The removal of these people does serve as an example to the rest of the immigrant community that some of these bad actors that put their own community in a bad light should be removed; they're sympathetic with the removal of criminals.