UPDATE: My Pride flag got ruined by a burst pipe in the flat above leaking directly into my window alcove, so had to be taken down anyway. I'm now looking for a nice Pride decoration that can sit on the wide indoor ledge of the window. I've already had a neighbour message to say she was sad to see my flag gone. Thanks for the adivce!

London

I live in one of a group of three purpose build mansion blocks (low rise apartment buildings?) there's a building management company but also a board of trustees made up of flat owners/leaseholders.

I have been in my rented flat for four years and for most of that time I've had a medium sized Pride flag hung on the inside of my bedroom window, it doesn't cover the window and it isn't hanging outside at all. Today a letter was put through everyone's doors with a reminder of building and garden rules, they've done this before but this time it included a section on windows - with a (seemingly?) new rule about not displaying flags in windows.

My Pride flag is literally the only flag displayed in a window of any of the three buildings. They haven't given a reason or rationale for this new rule, and no one has ever mentioned flags in the buildings' group chat. It seems targeted but without them expressing that it's about my flag, someone else has already commented about this new rule on the group chat and said they have only seen this (my) flag in recent months - so far no one else has said anything.

I am a queer person, and my gender and sexuality are protected under anti discrimination acts in the UK, but this is a private residence so I'm less sure on if I can rightfully disobey this new rule. Any advice would be greatly appreciated.