Instead, what we see today, albeit with amped up security presence, are people embracing the special day in Boston and celebrating their ability to run, to ride, to walk, to observe the event. The usual mantra is "we have to do x or the terrorists will win." Well, here, we see the terrorists losing. Why? Because Bostonians and Americans more generally are resilient. More than folks have generally thought. This is important because anti-/counter-terrorism efforts can never been 100% as much as we would like. Stuff is going to happen. That we can overcome it and move on is key.
Today, we are getting a very visible illustration of this resiliency that is so important. So, we should not only enjoy the reality that the Tsarnaevs failed (yes, we can call them losers), but also take much pride in knowing that such nihilists can be overcome by people just enjoying what they do.