Just talking abstractly (again, the only reason I mentioned that is that saying "free speech!" is a non-starter when you're calling someone a bitch -- even if unnamed, if any other party could identify who you mean, it isn't anonymous -- and bringing disrepute upon an institution), but Canadian rights are generally based upon the idea that your rights end where my nose begins, and your right to free speech ends when you intrude on the rights of others not to be harassed, disparaged, etc. Rights go both ways, and there is a balance to be found somewhere in the middle.

Westboro is a hate group, by Canadian law. Their hateful protests are actionable.

We have a new crop of anti-bullying laws -- particularly focused on the online world -- because the speaker can't fallback on the notion that their speech is protected, because it isn't.