Literally, neighbors are asking people, 'Why are you spying on Grandma?'
So, they're hoping that the public approval of the president will keep them from having to come up with an answer to that question?
The answer to that question is obvious. Here's what they say "We aren't spying on Grandma. Sure, we're gathering up her information along with all the rest, but we don't actually look at it, or use it. And we can't be selective about what we grab, because then we'd sometimes miss stuff that's important. So need to continue grabbing everything, just in case, but, really we're nice people and we would only use it to help the American people. Okay, so there's the occasional bad apple who abuses it (e.g. LOVEINT), but we try to find them and get rid of them."
Does getting that answer make you feel any better about it? Probably not. It doesn't make me feel any better, even though I can see clear as day how a bunch of well-intentioned, hard-working people could follow this particular road right into massive surveillance hell, fully convinced that they're doing the right thing. From their perspective, it's easy to see that they are only doing good things, if we'd only just trust them. From our perspective, we can't know what they are or are not doing, and they're doing it without our permission and in contravention of our most fundamental law, no matter how they try to split hairs.