(terry)
When a person points out that the homeless or the global poor exist, and that there is already a great imbalance of wealth, they're promoting unity especially when they're encouraging the haves to help the have-nots in a reasonable way.
"Hey, you have $30,000,000 and that driver delivering your food is making below minimum wage. Why not a $7 tip to bring them to that?"
That's not promoting division, that's promoting unity! You're encouraging the person to see another fellow person,,, as a person!
(terry)
"Promoting division" is a phrase that's supposed to be used when someone lies about another group. When a right-wing politician repeats lies about refugees or immigrants, they're promoting division between Americans and potential Americans. When someone with a disability is being mocked, and "jokes" are made about their inhumanity, that's promoting division!