https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13993600
Policemen entering the study of a medical student in search of thieves shoot at a pair of skeletons by mistake Etching by T. Onwhyn, 1844.
Original public domain image from Wellcome Collection
Public DomainFree CC0 image for Personal and Business use