The National Association for the Advancement of Colored People (NAACP) exhorted people to wear white and carry signs at a protest against Trump on Monday.
The Mercedes-Benz Stadium is the venue for the 2018 college football championship game in downtown Atlanta. Trump and supporters say that kneeling during the anthem is a sign of disrespect.
The NAACP also planned a "Twitter storm" to begin at 6 p.m. and continue through the game to highlight what they say are lies told by the president.
April 28, 2017 archive photograph, President Donald Trump gives a speech in the city of Atlanta, Georgia. Organizers said the show of white was meant to mock the "snowflake" insult that Trump supporters make against the president's opponents.
A group calling itself Refuse Fascism ATL, is also scheduled to make an appearance in Atlanta.
In the four years of the College Football Playoff, this was the first time in a national title game the teams were not on the field during the national anthem.
This prompted a response from Richard Rose, the president of the Atlanta NAACP chapter, who said in a message to Trump on MSNBC that if Atlanta is "so bad, don't come". "We respect those who choose to do so, and we fully expect some groups who will be protesting outside the game".
Atlanta police say they worked with the Secret Service on preparations for months before the College Football Championship game between Alabama and Georgia.
Asked last week if he was concerned about potential roof leaks in the event of rain, College Football Playoff Executive Director Bill Hancock said: "We have been told the roof is in great shape, and we're not anxious one bit about that".