I would give them a warning that "house rules" do not permit disturbing/harassing other tenants and that there have been some complaints.  

They change the rules (including whether or not you can continue to rent out your unit), they change the amount of the dues, they harass you about the plants you have on your patio....Take it from one who bought a condo expecting to live there forever, and sold it two years later - because of the HOA.Condos are also harder to finance, so they're harder to sell, too.

And the title plants are pretty up to speed.. its not like what I run into out east closing were you need abstractors and there is all sorts of encroachments and weird stuff I have never hear off... ( currently building Charleston SC) and those properties were created many times before we were even a state out here on the west coast.So the OP can talk with a lawyer but in this case unless they were being harassed or something its just not what we do here in these situations..

I have talked to my drug dealer tenants but they were again very aggressive and told me that I am harassing them because they are very social and just have a lot of friends.

Also, having too many inspections can turn quickly to harassment and not granting quiet enjoyment of the property.

It's only harassment if done repeatedly and in a manner that's considered disturbing and/or threatening. 

So, you won't get in trouble for doing this, unless you tell the judge you only did it to harass the PM, for instance.So, you file the suit and the PM immediately contacts you probably.  

An annual increase of $15-30 per month will not cause a good tenant to move, but deferred maintenance, harassment to quiet enjoyment, and exorbitant rent increases will. 

And they even called up applicants or previous tenants on the phone and explained to them that if they continue to stalk/harass me, that they will be arrested.  

Ontario Human Rights Code:People cannot be refused an apartment, harassed by a housing provider or other tenants, or otherwise treated unfairly because of one or more of the following Ontario Human Rights Code grounds: race, colour or ethnic backgroundreligious beliefs or practicesancestry, including individuals of Aboriginal descentplace of origincitizenship, including refugee statussex (including pregnancy and gender identity)family statusmarital status, including those with a same-sex partnerdisabilitysexual orientationage, including individuals who are 16 or 17 years old and no longerliving with their parentsreceipt of public assistance.