Do ordinary Citizens need to protect their data?

In NSA-intercepted data, those not targeted far outnumber the foreigners who are

Examples from the Washington Post seem to indicate that the answer is "yes".

"Among the [material collected by NSA] are medical records sent from one family member to another, résumés from job hunters and academic transcripts of schoolchildren.

“None of the hits that were received were relevant,” two Navy cryptologic technicians write in one of many summaries of nonproductive surveillance.

"The NSA treats all content intercepted incidentally from third parties as permissible to retain, store, search and distribute to its government customers."

http://www.washingtonpost.com/world/national-security/in-nsa-intercepted-data-those-not-targeted-far-outnumber-the-foreigners-who-are/2014/07/05/8139adf8-045a-11e4-8572-4b1b969b6322_story.html

Of course you need to protect your data. You close your window blinds at night don't you?