The Trail of Tears, the US Civil War and the appalling form of slavery that led up to it, the Chinese Exclusion Act, racially-biased "eugenic" involuntary sterilization, Jim Crow, the Japanese internment camps, the Indian Schools, Wounded Knee, cowboys & Indians movies, the Tulsa race massacre, per-country immigration quotas, mass deportation, child internment camps, etc., are not mid-millennium colonization. There's an unbroken chain of racism running through US history since before its foundation, one so deeply embedded in US culture that I couldn't see most of it until I had been gone for several years.
Idealizations of US history are common to all US factions, though their content differs.