I think the problem is often that we, or at least I, have too little information to be sure.
I.e. Palestinians often complain that Israeli soldiers kill many innocent people.
And Israelis claim that Hamas hides behind civilians.
I am pretty sure both statements are correct, and they can be correct at the same time.
Then the question is how often is it more the case that Israeli soldiers just don't care and how often is it more the case that Hamas uses civilians as shields? Who knows? I am sure there are lots of people who have some guesstimate, but how many know the truth?