A divisive issue is something that divides people into two groups. It can be something as simple as a political party, or it can be something as complex as a religion.
The divisive issue is the abortion debate.
The divisive issue is the transgender bathroom issue.
adjective
dissenting (especially dissenting with the majority opinion)
Synonyms:
1
The company is divided into the ergonomics division and the retail division.
2
The Supreme Court includes the Trial Division and the Appellate Division.
3
The examining division may also override the assessment of the search division.
4
Division is the undoing of multiplication.
5
The divisions of the porters are documented.
6
The issue of importance is divisive.
7
The userbox is divisive and inflammatory.
8
Propagated by division and by adventitious plantlets.
9
The Bohemian division defended the camp.
10
The Division decided that the bequest was invalid.