Yep, you nailed it. That's why they are all in the party of the KKK, the party that stood in schoolhouse doors blocking black children from entering (they resisted desegregation in Boston more than anyone did in the south), the party of soft bigotry of low expectations. Democrats are the original racists and remain so.
The resistance to school busing in Boston was mostly among blue collar Irish Americans who could not afford private or parochial schools or to move to the mostly white suburbs that were inhabited by liberals, some of whom, like Judge Garrity, who ordered the desegregation, were themselves of Irish descent.