First, for clarification, I am not anti-LGBTQ.
My office has taken part in the Pride Month, which is celebrated throughout the UK in June every year. The month celebrations end in a large Pride march in London (this year, it was on the 6th of July). In the office there were usual talks and gatherings, together with decorations (pride flags).
It's been two weeks since the end of the month, and the decorations still stand. I know some in the office are very actively involved in LGBTQ groups and activities. I'm just an average person who support their cause, nothing less, nothing more.
I do not want my office to become a bastion of identity politics, nor to be used for the interests of some particular groups. If we were to allow this, the causes to be championed are numerous, and in the end, you end up with an office which is being used for purposes which were not originally intended. As such, although I was happy to support LGBTQ cause during the Pride Month, now it's over, and so I think it makes sense to remove decorations (which are also present outside the office, visible to the public).
So, how can I communicate this matter to the admin team in charge of this stuff, without sounding anti-LGBTQ? I don't want to hurt sensibilities, nor damage my reputation.
Notice, the office is decently big (50 people), and not everyone knows each other well, so prejudice might quickly arise.
I can communicate to the admin team, which oversees the building (room booking, cleaning, use of space, etc). They do have an email address, which I imagine is visible to whoever is in there that day. Those decorations are reusable. For other events such as Christmas, they are removed when it is commonly judged acceptable to do so (e.g. for Christmas, they're removed at Epiphany).
I have no clue of what others think. I imagine those actively involved in the campaign have no problem with the decorations (and I'm not suggesting they are actively trying to leave them there forever). Maybe there are several who think like me, but are afraid to speak out. In the world today, if you say anything that might look anti-minorities, you become immediately a bad guy.
The goal? I said it. Just make sure the office stays neutral to social/political causes. We are not a company who has the defense/support for LGBTQ as an official core value, nor there is talks to make it one. So, at least for now, it feels inappropriate.