As a non-american I would like to ask: did the affirmative action go too far up to the point of endangering another group? If so, what correction steps would you take?
As an American my impression is blue collar white working class Americans decided they'd rather give up the benefits of unionized employment in return for not having to give up the racially based pecking order.
Shameful behavior was the choice of the USA's white working class: They had the choice between prosperity without racism, or immiseration with the continuance of racism. They chose the latter. They voted against pro-growth policies because those policies were promoted by a political coalition that was also committed to extending prosperity to every citizen, regardless of race.