There are many examples of killers on the walk. For example: why haven't the men implicated in the Mavi Marmara incident been brought to justice? Would make more sense to go after current cases, than chase after a crime that happened 68 years ago.
Law expanding definition of terrorist activity passes first Knesset reading (Haaretz)
from the article: Nazi war criminal, 91, charged in Germany with third WWII murder