connected with the crime of murdering your brother, or killing members of your own group or country

The civil war was a fratricidal conflict that divided families, relatives and friends. 这场内战是同胞自相残杀的冲突，它在家庭成员之间、亲属之间和好友之间都制造了分裂。

The party was perceived as fratricidal by the electorate. 选民普遍觉得该政党是在选区制造不和。