"The difference in this case is that the whole family are or were involved. This is a war whether you want it or not. Your post assumes that the rest of the family are innocent. Your post also assumes that normal trial by a judge and jury could be held."
Some of the Hamas fighters did make it back to Gaza along with their Hostages. However, it is not totaled in the two death tolls for Gaza and Israel is that the majority of Hamas attackers were actually killed in Israel ie 1,500:'
"The country’s military said on Tuesday that it had recovered the bodies of more than 1,500 Hamas fighters inside Israel"
Source: Israeli troops mass on Gaza border as death toll from Hamas attack passes 1,000 | Gaza | The Guardian
Regards
SP
