Temp setup. Probably some story behind this someone is using as meme bait. The monitor cable is on the outside of the desk. The mouse and keyboard are not anything a Mac user would have. The book as a mouse pad… The hand is from at least a half hour or more later. As initially blood does not look like that. The only mark that would have been a fist is the one on the right. The rest were made by a smaller harder blunt object like the back of a screwdriver handle held in a hand or similar. The force of a hand will distribute like the pattern on the upper right, not the sharper dense fractures with very localized penetration.