This set him off on a rageful tirade and began to harass me via phone calls and text messages.

And a single-family home doesn't have a Nazi living three doors down to constantly harass your tenants with complaints about HOA rule violations.

Shared walls with neighbors that may harass you or your tenant, refuse to pay for damages to your unit caused by their unit, file complaints against you all the time, etc.

Isn't it harassment if she continues to contact the owner directly?

They don't give small time weed dealers and smokers a hard time, and instead focus on targeted harassment of big players in drugs and violence.

I had spoken with several neighbors before hand as well as passed by at night several times prior to purchasing the property and they helped me see that these were just neighborhood guys who are dealing but are not threatening or harassing passersby.

People are complaining.Cops are coming around non stop and harassing everyone.

It sent a signal to the rest of the country's (and world's) big businesses that NY State will harass you if you want to go there. 

Look at it from your tenant's point of view and stay out of the property until the eviction is complete or risk being accused of harassment.

If you feel like it tell her her multiple rants constitute harassing phone calls and any further complaints can be addressed to your lawyer.