If they turn 18 while in your unit it won't matter because you will only access offenses listed/charged as an adult, which would be none unless they're committing crimes as they live in your unit and turn 18. 

I didn't know if these were more for beginners or not (please take no offense Brandon - I think you, and your beard are great!)

I would bet most people feel like I do who are reading this thread, even if they don’t completely agree with you would hope you that you accept an apology for any offense.  

Removing their personalization may weaken their roots, but may be appropriate if what they are doing is offensive versus just different taste.

So we found the accusations very offensive.

No offense, but.....I literally don't think you could be more vague. 

You probably mean quitclaim, which should cause you concern if you are throwing out incorrect made up terms you've never used or heard of before.Putting yourself on the deed may be a criminal offense depending on the lie promise you tell to the homeowner, and/or, may subject you to licensure/registration from the state."

It might be a good idea to have your lease forbid blocking windows with foil, or other opaque items other than curtains or commercially available window blinds (that are not flags or political).Drug dealers, and fake drug dealers tend to block windows so no light can get in, and no Police Officers can see in.As far as flags it's not a proper venue for National flags, and gives you leverage in case someone decides to hang flags offensive to some (such as public display of WWII Axis flags, or socio/political flags) that might be detrimental to your rental business.Good Luck!

I think we find it more bothersome or offensive when the tenant is on Section 8, and I understand why but I always try to remember that I would deal with it anywhere.

I have a feeling the property manager is a smoker and took offense to your request LOL.