My definition of evil is pretty broad. For me, to be evil means to consiously inflict some sort of discomfort to another living thing. Of course, with a definition that broad, it needs more refinement for “individual” cases. There’s completly evil, such as when someone would order the mass killing of thousands of innocents on a complete whim. On the other end of the spectrum is very slightly evil, like poking soemone becuase they stepped on your foot by accident.
There is no real obvious “evil” in our modern world, no person hell bent on destroying everyones tranquility for no good reason at all. But there are those who come pretty cloes in the name of profit or beliefs. I speak of corporation that have the main goal of absorbing as many other companies as possible, or simply running them out of business. This puts hundreds out of work and in miserable conditions. Also, terrorists groups stive to “regain the holy land” by killing innocents for no good logical reasons at all. The biggest (and most expected) example I can think of from history is that old scapegoat, Hitler. He fit’s the bill of the ultimate evil perfectly. In literature, I’ve read a book when the antagonist tries to bring down a corrupt weapons goverment/company in revenge for his “mother”. The company is tring to destroy the planet and the protagonists are seeking to protect it, while also under attack from the antagonist. That combines elements of “straight” evil, and the idea of an evil corporation.