According to the following from Wikipedia, I believe Mach may have a valid point in this instance. The scientists apparently downplayed the risks, which should have been apparent - even to the non-technical citizens of the area.
The killers were of course the collapsing buildings; according to another part of the Wikipedia article, building standards and practices are believed to have been quite deficient compared to current standards.
From Wikipedia:
http://en.wikipedia.org/wiki/2009_L'Aquila_earthquake
A trial, which lasted from September 2011 until October 2012, found six scientists and a former government official guilty of involuntary manslaughter.[90] According to the prosecution, they had spread "inaccurate, incomplete and contradictory" statements after preliminary tremors could be felt on the days before 6 April 2009. While scientists were found guilty for failing to give adequate warning,[91] the full text of the decision said that that "science [was] not being tried for failing to predict the April 6, 2009 earthquake" ("Non è sottoposta a giudizio la scienza per non-essere riuscita a prevedere il terremoto del 6 aprile 2009").[92] The seven members of the National Commission for the Forecast and Prevention of Major Risks who were convicted were: Franco Barberi, head of Serious Risks Commission; Enzo Boschi, former president of the National Institute of Geophysics and Volcanology; Giulio Lorenzo Selvaggi, director of National Earthquake Centre; Gian Michele Calvi, director of European Centre for Earthquake Engineering; Claudio Eva, physicist; Mauro Dolce, director of the Civil Protection Agency's earthquake risk office; Bernardo De Bernardinis, former vice-president of Civil Protection Agency's technical department.[7]
Boschi had called a major earthquake "unlikely", while not entirely excluding the possibility. De Bernardinis had informed the public that there was "no danger".[8] The prosecutors cited a scientific opinion that the low-level tremors ahead of 6 April quake were typical of the seismic activity preceding major convulsions, but the defendants had classified them as a "normal geological phenomenon".[9] They were criticised in court for being "falsely reassuring" and Judge Marco Billi gave them a six-year jail sentence on 22 October 2012,[7] reasoning that they had provided "an assessment of the risks that was incomplete, inept, unsuitable, and criminally mistaken".[92][93] They were also banned from ever holding public office again and had to pay court costs and damages.
Enzo Boschi, one of the convicted, said, "I thought I would have been acquitted. I still don't understand what I was convicted of."[7] His co-defendant Claudio Eva said that "it was a very Italian and medieval decision."[94] Their lawyers announced they would appeal the verdict, and it will not be finally decided until it is heard by the appellate court.
ETA: The scientists were only following orders, IIUC, in stating the uncertainty of an earthquake as a sequel to the series of tremors, to reduce panic among the citizens. The government instead should have provided less dangerous temporary housing or evacuated residents from the area, IMO.
ETA2: Just wait for Mt. Vesuvius to start acting up. The Italian government planning for that is....?