> Why ask civilians to leave before bombing if they wanted to kill them all? Why ask them to move to a different location?

Obviously, to maintain plausible deniability. Note that there was nothing organized in the South where they were asking those civilians to evacuate to. And they have also bombed the southern side occasionally after evacuating all those people there.

Not to mention, they have killed plenty of obvious non-combatants, such as journalists, children, doctors and others. They have bombed hospitals under flimsy pretenses, and have leveled entire neighborhoods. By their own (certainly highly biased count) they have killed two civilians for every one enemy combatant - a huge margin.

We can also compare these nukbers to other similar wars in the region. In the Iraq War, it seems the direct civilian casualties were in the order of 200,000 people in three years - most of these killed by coalition forces, with significant chunks killed by increased criminality and by Iraqi forces. In Afghanistan, where there was an even less well defined combatant, the total civilian death count is around 200,000 people in 20 years of conflict. Israel has killed on the order of 20,000 people in less than two months - going by IDF estimates, this would be ~13, 000 civilians. Extrapolate this to 36 months or to twenty years to compare.