Spying on other governments is the NSA's job. The problem is when it starts spying on ordinary citizens.
Nevertheless, specific instances of spying on allied governments is often irritating to the ally involved, and their citizenry.
US citizens are probably less upset about foreign surveillance by the NSA (even if it is directed at allies), OTOH, US citizens aren't the entire audience for news.
It is, however, incredibly bad form to be caught doing so.
I'm not a terrorist and yet the NSA can do whatever it wants with me, and that's scary.
I'm sure we're all glad to know that those of us not born into the Holy Light of the USA are subhuman scum unworthy or consideration.