(Pro 20:26 KJV) A wise king scattereth the wicked, and bringeth the wheel over them.
I think the NASB misses the target of this verse by using “winnows” (2119). It isn’t wrong in the sense that the meaning is impossible but they seem to be trying for an agricultural metaphor instead of war. It is a matter of passive and active.
The farmer winnows by tossing the threshed material up in the air and letting the wind blow the lighter chaff away, leaving the heavier grain. It is a natural separation. The king winnows by driving the evil out.
It is possible that this is a reminder that we as commoners are to be more patient with the evil around us. We are not in a position to do much so long suffering is our situation. Those in authority have a greater responsibility. They are to actively drive the evil out.
So? When we vote and interact with our leaders we need to understand that they have a greater calling in this sense than we do.