If efforts to do social work are couched in selfish motives then they will die a premature death. Why would my efforts get politicised? I have values I inherited from my father. He helped many. Anyone even a postman knocking on our door would get a glass of water and some sweets.
But behavior in the human being is sometimes a defense a way of concealing motives and thoughts as language can be a way of hiding your thoughts and preventing communication.
We should often blush for our very best actions if the world did but see all the motives upon which they were done.
We should often feel ashamed of our best actions if the world could see all the motives which produced them.