What is Casualties of Israeli attacks on the Gaza Strip?

Mass civilian casualties of Israeli bombing, shelling and rocket attacks on the Gaza Strip have occurred in the Israeli–Palestinian conflict, in which Israeli bombing attacks on the Gaza Strip cause numerous civilian fatalities. The reason for such operations is purportedly to carry out targeted assassinations of militants from Hamas, Islamic Jihad and other groups seen to be a threat to Israel, whose Shin Bet data banks monitor thousands of Palestinians for targeting. Israel regards such cases as either unfortunate errors, the consequence of civilians being used to shield militants, or as acceptable collateral damage.