Evil is a word that is quite overused by the Daily Mail.
Sociologically speaking, it is the limit of "I/we don't like that." It is the opposite of "good" in the moral spectrum and is simply defined by Merriam-Webster as "morally reprehensible."
Those who think humanity has some special place on the planet apparently ascribe it to some malevolent force or being, or indeed to humanity's innate(?) predilection for being "not good." To some suffering is a sign that evil is about.