Least Effort and Acceptance

The spiritual law I struggle with the most is “least effort”.  The issue for me is accepting the situation as it is when I see another person manipulating the situation to his or her own self interest.   Also, when someone is doing harm to another…..how can I accept this situation as it is?  My instinct is speak up against it or take action to stop the harm.  Unless I’m mis-understanding the law, I feel a disconnect in my heart on this one.