So is targeting civilians

Here is an article where IDF shot a woman and child with any kind of warning of military activity in the area. Worse yet there were no Hamas belligerentsin the area.

https://www.cnn.com/2023/12/16/middleeast/idf-sniper-gaza-church-deaths-intl-hnk/index.html

Here is a UN report about the number of women and children killed in the first month of the conflict

https://press.un.org/en/2023/sc15503.doc.htm

And here is an article that explains how several independent parties verified the death toll reporting of the Gaza Ministry of Health.

https://time.com/6909636/gaza-death-toll/

I have a hard time believing that the 30,000 Hamas were hiding behind 300,000 people.

https://edition.cnn.com/middleeast/live-news/israel-hamas-war-gaza-news-12-10-23/h_403d0f55740b5d165adc6416cf5be5cf