Amoral does no less harm overall than evil, it's just done to 'the masses', not particular targets.
No one at Facebook gets to claim they were just following orders if they have _any_ understanding of the possible consequences of their work.
(If you believe the authors/operators that specifically maximize profits over responsibility are not responsible for their outcomes, you should read back into the posting about PG&E in CA: deliberately ignoring the wear & tear on 100 year old support hooks on high-tension power lines, thus sparking the fire that burned down Paradise, CA.)
I don't believe for one second that FB is going to be purposefully taking 'illegal videos' of people.
Nor do I believe Facebook is even evil. It's just a social network, end of story.