What do ugly mean?

This poem is talking about people calling other's ugly.

Why do some people call other human beings ugly
When God created us all equally

In his own image we are beautifully made
And one day we're going to die, not fade

We all bleed the same color blood which is red
But it won't matter if we're dead

Black and white people are one in God's eye sight
He puts us on earth and wants us to cherish everything life's worth

No one is ugly, we are all pretty
We just act differently

We should love each other
Before this world ends forever.