Why? Just because it looks funny does not make it 'wrong.' That NC district was designed specifically to ensure a black could be elected and it makes the neighboring districts much more competitive for the Republicans.
You can look up the district here. http://www.ncga.state.nc.us/GIS/RandR07/District_Plans/Congress/Congress_ZeroDeviation/2003/Reports/IndivDistrictByPrecinct/RegPR_PDF/rptVTDRegPR12.pdf
It's 45% Black and 58% Democrat only 26% Republican. Back about 10 years ago, The Supreme Court upheld the district by pretending it's lines were drawn for political rather than racial reasons. It's legal.
It’s wrong because gerrymandering has a negative effect on competition and voter turnout. It artificially enhances the incumbent’s advantage. It makes it harder and more costly for challengers to run. It negatively effects representation geographically. It negatively effects the voters’ choices because “who draws the district” becomes a factor over the voters’ desires.
It may be legal, but it’s still wrong. There are much better ways to draw districts then political and racial gamesmanship.
jw