Atheists taking the moral high ground? Something akin to an oxymoron, no? FWIW, people of faith have been on that high ground for decades; allowing our rights to be slowly eroded. We're talking decades here! Believers stoically ate their pride and kept their mouths shut for the most part. We may be approaching the point where believers have been backed up as far as we can go. The backlash has barely begun, it's just getting off to a wobbly start IMO.
FGS
Theists do not have a monopoly on morals, nor do they have a monopoly on immorality. I'd say atheist morals are more pure, because the theist acts morally under threat of persecution from his god, while the atheist acts morally simply because he knows it's the right thing to do.
If an atheist can't act morally and do the right thing, then please tell me why I bought dinner last night for a disabled veteran who I didn't even know.