The phrase "great divide" refers to a significant gap or difference between two groups, ideas, or opinions that makes it hard for them to understand each other or come together. Full definition
It has become these days the worst idea for society since it does nothing but create great divides between people just as race does. (religion.blogs.cnn.com)
Well, Its a subject of great divide among arsenal fans.. (justarsenal.com)
You're right... it's just evidence of one of the dangers of religion - sometimes it is used to create great divide. (religion.blogs.cnn.com)