400 Years, an Inaccurate chant and integral part of their dogma. It neglects 155 years since the Civil War; 105 years since the Bowell Wevil infestation & migration North with 2x to 3x pay increase; 55 years since Civil Rights movement (Affirmative Action & Pell Grants); 79 years since northern WWII production employment; 70 years recent immigration from Africa; and Above average procreation rates. Let's not forget the underground railroad. So 4 to 8 million have procreated & migrated their way to 40 Million all with their hand out.
The militant crowd keeps reminding us all of how unwoke we are; and, we do not appreciate the "400 Years" of forced labor.