If it didn’t work, would they have been using it since Reconstruction? There’s a whole industry dedicated to not much more than this. See: Jesse Jackson, Al Sharpton, Barack Obama, Jesse Jackson Junior, Marcus Garvey, Louis Farakhan, Jeremiah Wright, Ben Crump, etc., etc...
But, the only people who give any credence to those clowns are Blacks and white Race baiters who are already in the Democrat’s corner.