From this, therefore, we are to learn these two lessons. First, that we should love and worship all men in our hearts, and approve and think well of and receive all their deeds that have the likeness of goodness, though the doers be bad in the sight of God, except they be the deeds of known and open heretics, or of open cursed (or excommunicated) men; for of these two we are specially to fly and eschew their company and coming amongst them. And we are also to reprove and refuse their deeds, seem they never so good, as long as they are rebels to God and holy Church. And if a worldly, cursed (or excommunicated) man build a church, or feed poor men, thou mayest safely hold and judge such his doings to be noughts and deem them as they are. Also if an open heretic, who is a rebel to holy Church, preach and teach, though he convert a hundred thousand souls, thou mayest hold the deed, as to himself, right nought; for these men are openly out of charity, without which all is nought that a man doth. (John Climacus)

Intention matters. But intention can be beyond our knowing, often for ourselves and usually for others.

So if the deeds of others are superficially good, we should give them the benefit of the doubt in terms of their intention.

This is, I think, one of the wisest aspects of loving our neighbor as ourself. We can almost always find good intention to explain our own deeds, good or bad. In like manner we are to honor the deeds and intentions of our neighbors.