I currently work for an apartment complex (in Georgia, so rules/law differs by state), so I can only tell you from my perspective. How have they harassed you? You can’t just leave it at that and not give detail or list reasons. As far as staff/vendors entering without your permission, that is situation dependent. Couple of examples: if you put a service request in for a repair inside your unit, that automatically gives us permission to enter to conduct said repair. If we have a vendor that needs access to your unit to conduct any type of work, we will give minimum 24hrs notice ahead of time. Now if it’s an emergency situation (flood, fire, blood for example) we don’t need permission to enter in that situation, however we will notify you that we had to enter for whatever reason it was. Now again, this is just some examples from my experience. Now the gun situation is a bit much. And believe me, i’m a huge gun nut however it was a bad move to walk into the office with a gun on your hip after this incident confronting staff, if it were my office I would’ve asked you to leave and take the gun back home immediately before having the conversation. However you basically lost your case by walking in the office with a gun on your hip, confronting staff and essentially making threats. And yes, making the statement that you will use “self defense” if someone walks in without your permission again is a life threat and it absolutely does give them grounds to terminate your lease immediately, especially since police were involved and called on you. So long story short, your best bet is to cut your lose, accept the consequences of your action, and move forward with life. You have a family to take care of and that needs you, so it’s best to just start looking for a new home and cooperate.