Some residents of Gaza were given a 5 minute notice telling them to leave; when they did they were bombed in UN compounds and hospitals in spite of the IDF having the co-ordinates for these 'safe havens' -others were killed as they ran from their houses. You omit to mention the fact that Gaza has no bomb shelters..and effectively had nowhere safe to run to. This so called warning was just for propaganda appearances.
Palestinian reportedly shot dead by Israeli soldiers after approaching Gaza border fence (Haaretz)
from the article: IDF chief: Gaza war against Hamas was an 'excellent' operation