Do people harm others in the real world and experimental settings? sure.
Does that constitute evil? no.
The conclusion of the studies never mention evil.
“What the experiment shows is that the person whose authority I consider to be legitimate, that he has a right to tell me what to do and therefore I have obligation to follow his orders, that person could make me, make most people, act contrary to their conscience,” Blass said.
It is the junk writing and sensationalist interpretation of data that assigns the evil label.
What the subjects were doing in these experiments was behaving under contingencies. Assigning a label of evil or hero or immoral doesn’t help explain what’s actually going on.
Get over the search for evil or good. Get on with the search for why and how we behave.