Change starts by making enough people aware of and angry about the issue that the politicians can't afford to support these programs any more. If we're just distracted the next time $TECH_TOY or $NATURAL_DISASTER comes along, then nothing at all will change.
I don't particularly care if people find my anger at the NSA's systemic intrusion of our privacy annoying. I care more about that particular issue than I do what a random person on the internet whom I've never met might think of me. I care more about keeping you talking about the issue than I do about you liking me.