This is a subject that is entirely dependant on what you define as 'good' or 'evil'.
Even the most debased and brutal serial killer would probably say they were just misunderstood rather than evil (as a general rule if we think something is wrong we won't do it) so most people wouldn't be intentionally evil but it could be argued that the 'morality' of an action has just as much to do with the motivtion and intention behind it as the actual action itself so is it actually possible to be unintentionally evil? (again, entirely dependant on your own view of morality here)
'Good' and 'evil' do tend to be more about how something or someone is percieved by others rather than any actual moral reasoning behind it (I know this is violating Godwin's law but I think it's a valid point to make), supporters of Hitler's regime back in WWII (and neo-Nazi's today) would believe that they are good and doing the right thing, however, most of us here are in agreement that the Nazis were so cartoonishly evil that we often use them as a shorthand for the worst thing we can imagine.
Is either perception right or wrong? It depends on who you ask (for the reccord I disagree with the Nazis and do not condone or support them or any iteration of them or their beliefs).
Overall though, people aren't really morally aligned like characters in a DnD game so much as we assign ourselves and others alignments based on context and our own views and experiences.
Even the most debased and brutal serial killer would probably say they were just misunderstood rather than evil (as a general rule if we think something is wrong we won't do it) so most people wouldn't be intentionally evil but it could be argued that the 'morality' of an action has just as much to do with the motivtion and intention behind it as the actual action itself so is it actually possible to be unintentionally evil? (again, entirely dependant on your own view of morality here)
'Good' and 'evil' do tend to be more about how something or someone is percieved by others rather than any actual moral reasoning behind it (I know this is violating Godwin's law but I think it's a valid point to make), supporters of Hitler's regime back in WWII (and neo-Nazi's today) would believe that they are good and doing the right thing, however, most of us here are in agreement that the Nazis were so cartoonishly evil that we often use them as a shorthand for the worst thing we can imagine.
Is either perception right or wrong? It depends on who you ask (for the reccord I disagree with the Nazis and do not condone or support them or any iteration of them or their beliefs).
Overall though, people aren't really morally aligned like characters in a DnD game so much as we assign ourselves and others alignments based on context and our own views and experiences.