He seems to make the mistake of comparing damage done to response instead of potential damage done to response.
The two suspects, after settings off anti-personnel bombs in a civilian area, executed a police officer, then got into a firefight with automatic weapons, grenades, and more anti-personnel bombs.
They demonstrated the means and the lack of conscience to do a LOT of damage in an urban area. A lot more than the average day in greater Boston's automotive death toll and as such were met with a massive response to prevent that possible outcome.
The two suspects, after settings off anti-personnel bombs in a civilian area, executed a police officer, then got into a firefight with automatic weapons, grenades, and more anti-personnel bombs.
They demonstrated the means and the lack of conscience to do a LOT of damage in an urban area. A lot more than the average day in greater Boston's automotive death toll and as such were met with a massive response to prevent that possible outcome.