in a way that causes great, and sometimes unfriendly, division between different groups of people, or disagreement within a group of people

They need to govern less divisively. 他们需要减少分而治之的统治手法。

The Institute must be seen as bringing groups of people together, not as acting divisively. 该协会的作用应该是将不同群体的人团结起来，而不是搞分裂活动。