So now we're at it being concern about the poor black kids being bussed? Because throughout recorded history nothing has been more of a common denominator of 'why I should keep my privileges and you shouldn't get anything you want above your station' arguments than the paternalistic 'for your own good.'
If the only bussing that occurred was voluntary, I don't think there would be an issue. If there's a school close to where a kid lives, he should be able to attend that school. If his parents would prefer that he went to a different school, then it would be awesome if the school authorities made that option available, and even more awesome if they provided transportation to get there. However, if the family lives close to a school, but someone else decides that society would be better served if the kid took a long bus ride to some other, more distant, school, then whoever made that decision should be thrown out of office.
ETA: I just read about the Howard County Maryland plan. It isn't really a "busing" plan at all. Basically, in that county, some schools are overcrowded, and some are underutilized. The plan would move kids out of the overcrowded schools and into the underutilized schools, so that the buildings are used more efficiently. In some cases, that means sending people to a new school, and not necessarily the one closest to their homes. However, it involves redrawing district lines, not sending kids to school in different districts.
Where the controversy arises is that in the course of drawing the new districts, the powers that be deliberately included economic diversity in the goals of the redistricting. This rankles some parents who bought homes near good schools, only to find that their kids won't be going there.
In my opinion, fixing the school utilization issues seems pretty critical, but after that shortening the commute time ought to be the most important criterion used for redistricting, but from the articles I've read, there's controversy about whether the new district plan actually increases the commute time. More research required.....if I'm in the mood for it.