Q: If I see an incident that is unacceptable as per my conscience, should I follow the acceptance teaching and do nothing about it?
A: Acceptance teaching means, “accept it without grumbling if you cannot change it”. If you see an incident that is unacceptable in your view and you are in a position to do something about it, stop it from happening. But, if you are not in a position to influence the situation, then there is no point grumbling about it. If you do not accept it as the wish of the universe, you will be forced to swallow the bitter pill anyway. It is the attachment to our views that causes grumbling. Acceptance removes attachment but we may still have our views. The desire to change the event or any other desire is also fine as long as it is in tune with swadharma and there is no attachment to the desire.
Q: If result of action is not in my hand, why should I work at all?
A: Action is to be performed for the sake of purification of mind.