If having intation to control, it can easy become harmful (for one self). Nevertheless, there is also most excellent helping, others might suspect as harmful.
A mother, right from giving birth, is very often thought to act harmful by the child. Sometimeschildren even kill their parents.
Thought on vipaka of a helper who's attacked by those he tried to help: he might also in the past act angry toward goodness, when feeling not pleased after having given helpful intent.
But it's pointless to try to trace the complicated stream of kamma back for an individual, not to speak of interaction.
It's how ever, good to share good, share merits, since when others can gain faith by effects of them, their can rejoice, or are lifted up again, having worried to cause bad by good deeds.
If, having good concentrated, stay focused more and more on the frames of references, satipatthana, one might gain conncentration to see cause and effect clearly.
Touched, being touched, feeling arises... Beyond touch (of ignorance), feeling does no more arise, and one does only what's proper.
Giving there where people are attentive, giving toward Noble, those after it, grows one's priority, and those behind, one looks after, just out of compassion without desire to build up relation.
One gone forth, or say, every person who has gained integrity, knows well the responsibility and care toward those bowing down to one, toward the Gems, seeking refuge.
One who has taken refuge, like a child taken birth in a wombis been taken care as much as possible, by the Sublime Buddhas virtal heritage.