thinking those are equally unreliable is biased.
step 2: dismiss sites that say positive things about Israel as biased. Insist sites that persuaded you that Israel is evil are neutral.
this is very common. how can it be neutral if it persuaded you that israel is evil? sigh.
step 3: declare the UN to be fair and neutral and unbiased even though it has declared israel is evil several million times
the UN is fair, therefore israel must have deserved those condemnations, therefore condemnations of israel are evidence of its lack of bias.
step 4: analyze things in terms of accusing various parties of bias instead of thinking about what explanations of events are plausible.
example: israel attacks hamas fighters who are firing from a school. so take whatever the israeli govt says happened and call that biased. say its doubtful. but don't think about questions like, "why would israel fire on a school where hamas wasn't?" because then you'd get into the uncomfortable realm of blood libels.