This is a good point to make, especially at the start of the discussion.
We're so used to thinking in terms of all the reasons why people make choices that have a negative impact on others -whether it's "selfish genes", psychology or culture, that it may become difficult to see those positive forces you mention. Perhaps observation, or books you read, lead to feeling reserved, if not pessimistic, about the good in the human race.
Another thing is that a lot of people write to explain human bad behaviour, and indeed there are volumes to write in many fields, but it is more difficult perhaps to give positive explanations for positive behaviour-- unless you refer to religious beliefs and explanations.
I have no simple explanation for positive forces. Somehow it may become difficult to dare to believe that good things just are.
Explaining it away by hypocrisy and veneer theory certainly sounds too simple -- I imagine these explanations are only valid in some cases.
De Waal writes, page 20:
"This veneer theory, as I call it, became a dominent theme in post-war discussion. deep-down, we humans are violent and amoral."
French altruisme, from autrui other people, from Old French,
1 : unselfish regard for or devotion to the welfare of others
2 : behavior by an animal that is not beneficial to or may be harmful to itself but that benefits others of its species .
Merriam Webster's Dictionary.