Prejudice, no. It is entirely reasonable to suspect that Israel is the likely culprit behind this. Everything from the attack vector to the intentional disregard for massive civilian casualties would seem to showcase its signature style, in fact.
I would wait for confirmation on even those things before placing any trust on it. There is a lot of noise and misreporting at the start of a story like this because all parties involved want to set a political agenda which is convenient. The truth will never be 100% established but will be somewhere between both polarised stories.
