Agreed. Facts don't change. Using human shields is a war crime. Deliberately killing those human shields to get to the people behind them is also a war crime.Because the facts don't change.
Using humans as shields is a war crime. They are put in the position of being a shield (a war crime) before any Israeli action.

The fact is they are both war crimes. If you think Israel is justified in committing war crimes, just say so rather than trying to argue it's not a war crime.