However, it is prejudice and you can't bloody argue with the flat definition of words. Surely!
Prejudice
From the latin;
Praejudicium
"prae" = in advance
"judicium" = judgement.
So "prejudice" literally only means "judgement in advance", or assessing a situation and making a claim about the nature of that situation speculatively, in advance of the factual evidence.
In this case, speculating that an attack was committed by a radical islamist when it would literally only have taken a matter of
hours to wait for the relevant information to see if that was the case. Which on this occasion, it was not.
Really all it comes down to is simple impatience, and maybe seeking an opportunity to say "aha! Told you so!" if it turns out to be an accurate guess. Which is fine... It's a punt, but it's fine... BUT at least be humble and accept the omelette face if it doesn't pay out
.