I knew someone was gonna ask, I should have explained right away.
I was browsing 3 or 4 news sites at the same time and one of them had an article about Germany and Berlin commemorating the construction of the wall 50 years ago.
I didn't read the article and as I was going fast I confused construction and demolition (without even thinking that demolition was not 50 years ago) and started a "Happy 50th to our German friends" topic. Fortunately, I realized my mistake almost immediately and how inappropriate it would be.
It was just just a simple case of one side of the brain running slower than the other.