Common meaning:

All of us experience some things in common because we are part of humanity.

Hidden meaning of the Equity religion: 

There is no universal humanity.

Discussion:

Equity does not believe in the universality of humanity. We have nothing in common with other humans, we only have things in common with groups we are a part of.

Given the fact that we have practically the same genetic material as all other humans, other than a tiny fraction, it is practically beyond belief that anyone can think we do not have things in common with the rest of humanity.

The Equity followers disagree, and despite the fact that we are practically clones of each other compared to the genetic diversity we see in many other animals, they argue that none of that matters. The only thing that matters is the particular groups we are a part of. This means that humans who are fat are significantly different from humans who are thin.

Remember, Equity does not have to make sense because it is a religion.