A staunch defender of the values of the American South during the early 20th century, she was the president of the Georgia Division of the United Daughters of the Confederacy (GDUDC)[3][4] and for many years was the organization's historian.
[4] She was elected vice-president of the Georgia Association Opposed to Woman Suffrage (GAOWS) in May 1914,[2] and argued in her pamphlet The Vulnerability of the White Primary that giving women the vote in the South, in particular, would have the undesirable outcome of jeopardizing the control of politics by white people,[2][4] a point that she also made in an address to the Constitutional Amendment Committee of the Georgia Legislature.
[4][8] In opposition to Rebecca Latimer Felton, Lamar and GDUDC president Mildred Rutherford made their case to the Legislature on 1914-07-07 that the (then proposed) Susan B. Anthony Amendment was the Fifteenth Amendment in another guise, and by giving Black women the vote would engender racial equality.
[17] After World War I, in light of the social upheavals that it caused, Lamar expanded her position to include suffragists' "alleged" association with people like Max Eastman, a suffragist and socialist, and criticized them as misguided and their connection to socialism as the result of their ignorance.
[19] History professor Elizabeth Gillespie McRae observed in a 1998 article that whilst claiming to be a "reluctant politician" Lamar in fact took to politics quite aggressively.
[22] She was also the engine behind efforts to get Lanier honored in the New York Hall of Fame; she was successful on her third attempt, in 1945, and fronted the $5000 for the bust, which was made by Hans Schuler.