We read about the story in which Shchem takes Dina and has his way with her. He and his father Hamor approach Yaakov and family and request her hand in marriage along with a general approval of their communities intermarrying.
Yaakov and family are not impressed, to say the least. They come up with a plan and suggest that they cannot marry uncircumcised people. if they would circumcise themselves, they could marry each other.
Shchem and Hamor have all the males in the community get circumcised and when they are at their weakest point (the third day), Levi and Shimon say they cannot let this happen and they wipe out the whole town to no resistance.
Yaakov is upset at his sons. He tells them off that this is not the way to act and they have put him in a precarious position.
Levi and Shimon offer a very simple response to their fathers scathing discipline. In 34:31 they respond with just four words. הכזונה יעשה את אחותינו. Should we let our sister be treated like a harlot?
Four simple words to deflect their fathers wrath. Four words that did not even answer the issues Yaakov had raised.
Sometimes the answer is clear. Sometimes the method of action is clear. No beating around the bush. Yaakov was worried about diplomacy and how it would affect his relationships with the various other natives and clans around the country.
But Levi and Shimon had a clear and simple equation. We cannot let our sister be treated like that. Nothing more. Nothing less. The time to act was upon us and we had to defend Dina. The rest does not matter.
And Yaakov accepted the answer.