Gut responses to images of people or animals in pain are just that. Humans feel empathy by instinct. Displaying your hard-wired capacity for empathy, without direction or application, by liking, commenting on and sharing these kinds of images is emotional pornography. It doesn’t make a skerrick of difference for the subjects featured. What it achieves, is a cheap and nasty boost in activity for the poster of the image, and a deluded sense of do-goodery for the person interacting with that image.