If you and your group of friends want to harass and drive someone crazy you can't just have all of you mess with the person solo. There needs to be a tie together but not one that doesn't allow deniability. This is the importance of hats.

Make sure that each of you when you subtly harass your target make sure each of you is wearing a stylish and obvious but not humorous nor team related hat. Like a trilby, or a fedora, or a straw hat. But not a NFL team hat, nor a Cheesehead hat (see GreenBay). Just make sure that every time you mess with the subject each of you has a different, distinct hat on your head to signal to the person that you are harassing that it is a group of people that were you to point out the hat thing it would sound crazy.

again deniability is important so the hats can in no way be related to each other other than being hats.

But hats, my friend, is uniform enough to show them that they are under a group.

Literally came into my house while in the shower and ripped in half a right shoe. I was wearing them before I went into shower. I came out to find the right one ripped in half up the front.

Two baths and a half.

Considering that the house has been broken into so many times, yet the police decline to help you, maybe they are involved. It would make sense. The robbers/burglars repeatedly target your house, so they must feel confident they will not suffer consequences. The police refuse to make any efforts to apply consequences. It matches up nicely.