No self help please.https://abcnews.go.com/US/elderly-landlord-dead-violently-pushed-stairs-dispute-tenant/story?

If he was physically violent and plans to come back, you need to determine whether you'll allow that.

Mental diseases can do strange things to people; good friends of ours, her father had Alzheimers and lived with them, and I saw him several times go from clear to raging and violent for no reason whatsoever.

He told the HR manager that I have been harassing him online and making threatening and violent comments against him.

I would set the date range back 6 months and focus primarily on the violent crime in the area.

Drugs and violent crime aren't for me. 

One where an owner came out with no shirt and a baseball bat, pissed as Hell and ready to go with a violent fight over someone even asking about buying his house (which he was very close to losing)..Another one where the residents being foreclosed on took off with; every single cabinet, appliances, all plumbing fixtures, light fixtures, HVAC systems, water heater, smashed the drywall to rip out all the copper wiring, took the breaker box, took out every interior door, ripped out all or the laminate flooring, stole the garage doors and motors, even dug out a bunch of plants and trees from the yard! 

I looked at the crime map and it shows that while violent crimes do exist in those neighborhoods, they pale in comparison to some other neighborhoods.

If the tenant has a score below this, it will result in an increased deposit or cosigner requirement.A bankruptcy discharge will result in application denial.A paid rental collection and/or judgment will result in application denial.Smoking Policy: Our rentals are strictly non-smokingTenant’s guests who smoke should only smoke outdoors, at least 25 feet from any door or window and not on the propertyTenants will be fully responsible for damage caused by them or their guests during their tenancyPublic Records Criteria:An eviction and criminal records search will be conducted as part of the screening process.Applicants will be denied for the following or similar reasons: False, inaccurate, or incomplete applications; credit scores, evictions,judgments related to rental residency, tax liens, unpaid child support; current bankruptcy proceedings; felony convictions, multiple felonies, physical or violent crimes, domestic violence, sex offenses; and/or appearance on any sexual offense or terrorist database.Applicants may be denied or required to pay additional deposit or rent for the following or similar reasons: Insufficient verifiable income, excessive late rent payments, broken leases, property damages, unpaid rent, mortgage not current, foreclosures, credit scores or no credit score, excessive credit collection balances, slow pays, drug related offenses, etc.Cosigner Criteria:If a co-signer is required, the co-signee must have a gross monthly income 3x the monthly rent.

In the 1990s major cities began cleaning up their act by increasing effective police presence, aided by things like active cameras and debit cards, all leading to a decrease in violent crime.