What do you think is in the mind of the Vizconde massacre's killer?

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After more than twenty years, the killer of the Vizconde Massacre is still free. There are many suspects declared but all of them, including the recent batch were acquitted. There is no doubt on what Mr. Vizconde felt after learning that after more than twenty years, the death of his wife, 7-year old and 18-year old daughters was not given justice. I was just wondering... what do you think do the real killer or killers are thinking right now? Are they rejoicing because until now, they remained free and unknown? Do they feel very proud for perfectly hiding their identity and for puzzling the authorities for more than twenty years? Or are they living in a nightmare, hunted by their conscience everyday? What do you think they are doing right now? Do you think they already have their own families and had a daughter of whom they guarded well, afraid that the thing that they did to Carmela (the 18-year old daughter who was raped before being murdered)will happen to their own daughter. Do you think they are still living? Or maybe they have committed suicide... What do you think is in the mind of these criminals?