MSNBC's "Lean Forward" promo cites Declaration of Independence, leaves out "endowed by their Creator"

Why do liberals have a problem with the line “endowed by their Creator”?

From Archiving Early America:

Declaration of Independence
Here is the complete text of the Declaration of Independence.
The original spelling and capitalization have been retained.
(Adopted by Congress on July 4, 1776)
The Unanimous Declaration
of the Thirteen United States of America

When, in the course of human events, it becomes necessary for one people to dissolve the political bands which have connected them with another, and to assume among the powers of the earth, the separate and equal station to which the laws of nature and of nature’s God entitle them, a decent respect to the opinions of mankind requires that they should declare the causes which impel them to the separation.

We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable rights, that among these are life, liberty and the pursuit of happiness.

A month ago, there was this, from Gateway Pundit:

Figures. Obama Drops “Creator” From Declaration of Independence
Posted by Jim Hoft on Saturday, September 18, 2010, 1:50 PM
What a shock.
Barack Obama dropped “that are endowed by our Creator” from the Declaration of Independence in a speech he gave this past week.

Obama did it AGAIN about ten days later.

Now we have MSNBC’c new promotional campaign, “Lean Forward” (transcribed below):

“We hold these truths to be self-evident
that all men have certain unalienable rights
life, liberty and pursuit of happiness.
And the freedom to believe that while history’s gotten us this far
our best days are still ahead.
We’re the United State of come-as-you-are.
Our differences are what unites us.
So starting today the ideas that advance our country
no matter who or where they come from

No “endowed by their Creator.”

Three times in a month!