As I mentioned above, I hate PC crap, but your comment seems to entirely discount the actual meaning of this image, an image that in historical context has limited relevance to the Confederacy. Its real significance came in the 1950s and 60s during the Civil Rights fight, when it was resurrected solely as a symbol of hate and a rallying point for those who opposed desegregation. The overall concern here is no different than the abhorrence we (mostly) all feel when we see the Nazi flag flown with pride. The specific concern here is not whether the flag appears in a historic context (remember only a few ACTUAL CONFEDERATE UNITS used anything like the Dixie Cross), but rather is it appropriate to fly such a hateful symbol in any unnecessary context. The private company Apple made a private decision to not support such a thing, and I think it is wonderful. "Long live the South, and quickly die the Confederacy."
I totally understand and appreciate that context. I just think it's disingenuous to link the Emanuel Church shooting to the cause of removing this flag. The shooter held the flag is photos in his deranged manifesto or whatever, and someone pointed out that the state where this took place flied the flag on a government building. The nexus ends there.
Removing the symbol doesn't remove the idea behind it, just like banning certain hateful words doesn't erase their meaning. Hate will continue to exist, and it's a fools errand to think otherwise. However, this tragedy could have been prevented by common sense gun regulations. Opponents say that if not a gun, he would have used a bomb. But bomb-making ingredients are tracked, companies that sell those chemicals are heavily regulated and must record all purchases, large volumes of those chemicals are only sold to licensed and vetted people. The regulations are perfect, but they're 100x more stringent than what we have on guns today. To those that say he could have used a bomb, I say fine, let's raise the level of regulation of guns to the level of regulations of bomb-making chemicals.
Back on point, I agree that this symbol of hate should not be glorified by being flown on government buildings, part of state flags, or printed on belt buckles (though, in all those instances, it does help identify *******s from a distance). However, I think the timing of this discussion is suspect. We can remove all the confederate flags in the entire work, and ban the image form ever being shown again, and that wouldn't prevent the sort of tragedy that occurred in the Emanuel Church.
As to your comment about Apple being a private company (which, it's not - it's a publicly traded company, but I'll give it the benefit of the business judgement rule). Apple's board of directors didn't wake up yesterday and suddenly realize they were supporting racism. "Oh drat, we were being racist? Well, remove all the games with confederate symbols in them and all will be right. Apple has decided to no longer be racist." This was probably a me-too reaction to the other retailers, probably fearing potential backlash if some journalist wanted to make a stink about these games at a later time.
As for quotes, "those who do not learn history are doomed to repeat it." Erasing the flag, even from video games inspired by historical events, seems to ensure it is a history we will repeat.