Could my neighbors be in federal trouble?

My wife and I dealing with the two down stairs from our condo. Right inside the security door which is used for all 4 apatments there is a mat reading Merry Christmas. My Wife would have been fine with Season Greetings or Happy Holidays. My wife has left letters explaining her objections. But those have been rip down and the mat remains.

Today my wife received a package from amazon of stuff she ordered ON the package was written Merry Christmas and Christmas underline. We found the package on the steps to the condo. In order for the mailman to get in the buzzard needs rung or you need a key.

If one of these neighbors wrote this on my wife's package did they deface postal property? Can they be in trouble?/excerpt]

https://www.democraticunderground.com/10027423760