We are seeing a lot of mail boxes on twitter this weekend, and although it is true that the USPS is being attacked from within by Trump's appointee and yes man, Louis DeJoy, it doesn't give license to twitter users to post unattributed photos and assign nefarious motives to them.
Box 1. This photo was first posted on reddit by two users. u/fenix posted it Friday August 14, 2020 at 18:02:07 GMT or 2:02:07 PM EST at r/awfuleverything and u/MessUpDuane posted it Friday August 14, 2020 at 19:25:56 GMT or 3:25:56 PM EST at r/pics.
As best as I can ascertain, it first appear on twitter at August 14, 2020 at 7:03 PM EST and within a few hours had been posted and shared thousands of times by numerous accounts, some of which (blue checks) are supposed to know better. 1-4
I found over 40 accounts had tweeted this photo, I asked questions on +ten of the post but wasn't given any satisfactory answers. It is still being amplified this morning. 5-8
One user got very sassy with their "Hollywood" clout and fired off a snide reply and then immediately blocked poor little insignificant me before I could reply back.

To be clear, Box 1 is a photo of mailboxes that are inside the fence at Hartford Finishing, Inc. 844 West State St.
Hartford, WI 53027. They are there to be powder coated (refurbished), because that is what the good folks a Hartford Finishing do. https://archive.vn/vEIH8
Hartford, WI 53027. They are there to be powder coated (refurbished), because that is what the good folks a Hartford Finishing do. https://archive.vn/vEIH8
Boxes 2 & 3
These two photos did not attain the reach that Box 1 did. They were very easy to find with a reverse photo search using @TinEye. TinEye found them in 2016 and 2009 respectively. They were also used on the Word Press site 'Save the Post Office' 01/02015

Box 4 was used as 'sarcasm' to point out how absurd this can get, and to troll the issue perhaps, as well. This is what happens when we post photos without finding their origin, we dilute our position and expose ourselves and our cause to harm. TinEye found this 5/30/2012.
13-16 Please don't post or retweet content that you can not verify yourself. There were plenty of real stories on this matter that were available to share, and they contained real news agency vetted information on the subject.