We will probably never understand the Boston Marathon bomber’s motivation. The person or group responsible for the horrific bombings that killed three people and injured over 150 more will eventually be caught and will be asked the inevitable question: Why? Was it a political act? Was it a protest? Or was it the work of a pure sociopath?

Unless you have been living under a rock for the past three weeks, you have undoubtedly heard about Invisible Children and the #Kony2012 campaign.

I have Facebook, Twitter, LinkedIn, Instagram, Foursquare, Google+, Spotify, Turntable.fm, Bonfyre and Pinterest accounts. Although I’ll be the first to admit that my online social life may be slightly excessive, I doubt my experience is uncommon.

Yesterday marked the 10th anniversary of 9/11. Obviously, in more ways than one, that national catastrophe has been a defining event for our generation. The greater majority of us weren’t even teenagers in 2001, most undergraduate seniors being just 11 years old, and each of us has a memory of where they were on that day.

Before I came back to school, I went to see the New York Times documentary “Page One.” The standout figure of the film was columnist David Carr, whose gravelly-voiced, eloquent opinions about Twitter made it clear to me that my decision to join earlier this year didn’t mean I had “succumbed” to tweeting.