Affiliate Marketing Secrets

Salams. I was sitting in a library where they had a cross hanging near where I was sitting and it had a “dying person with arms stretched” on it. Obviously this was some kind of religious affiliated library and they possibly had many of these crosses all over the library.
I didn’t feel comfortable sitting in this library at first but then I forgot. I’m wondering if it’s haram to be in this place or if it’s OK to be in this place. I know many Muslims who study in Catholic schools so I’m assuming they are such crosses in their schools all the time, but I just want to make sure otherwise I wont go back to this library. J.Z.K.