The funny thing is this overturned an earlier decision (Cromartie II) which upheld the Democrats gerrymandering the same district on the same bases. Apparently it was ok then because Democrats.
Most of the court pirouetted about the issue in these cases to support their party in both. Sad.
This decision is the right one, districts should not be draw on the basis of race. The VRA never required such; there was a dubious consent decree which had as it's aim creating Minority Majority districts such as the one ruled illegal here.