שָׁבַ֥ר יְהוָ֖ה מַטֵּ֣ה רְשָׁעִ֑ים שֵׁ֖בֶט מֹשְׁלִֽים׃
永恆者折斷了惡人的杖，就是那些掌權者的權杖。
Rashi
The Lord has broken the staff of the wicked For he would smite peoples with wrath.
Ibn Ezra
The staff. A figure signifying kingdom. The rod. The same. The king is like a shepherd, the people like his flock.