(CNN) -- Rosa Brooks says "keep calm and shut the bleep up." 

The witty Foreign Policy writer is sick of what she calls "self-indulgent vicarious trauma" following the blasts at the marathon finish line in Boston last week, which killed three people, injured more than 100 and set off a manhunt that left an MIT cop dead. 

"You don't need to keep changing your Facebook status to let us all know that you're still extremely shocked and sad about the Boston bombing," she wrote last week. "Let's just stipulate that everyone is shocked and sad, except the perpetrators and some other scattered sociopaths." 

CNN iReport: Run for Boston 

Part of me loves her piece. It's a worthy critique of the faux-concern and needless commercialism that can grow out of tragedy. But I think Brooks is selling people short by writing that "there just isn't much most ordinary people should do in immediate response to events such as the Boston bombings." 

There's plenty to do, as runners have shown in the week since the bombing. Within hours of the blasts, people all over the world were lacing up their running shoes and going outside to run. It's a simple, selfish act. Some did it to clear their heads. Others to process what had just happened to fellow runners and those cheering them on. I did it because I felt like I just needed to do something. And I feel all the more compelled to keep training because of inspirational stories like those of Adrianne Haslet-Davis, a dance instructor who lost her foot in the bombing but vows to dance and run again. 
did she talk about a social media site?
You don't need to keep changing your Facebook status