The Antisocial Socialist

The BBC, among other outlets, reported on the story.

I'm informed that when the events in Cologne were not being reported, far right sources spread not entirely trustworthy information.

Far right sources tend to do that in every single event, regardless of reporting. The same thing happened when passports were found during the Paris attacks, even though there was actually no official information yet (who the passports belonged to, whether they were fake, etc. were still things being investigated) and some outlets were urging people to not jump to conclusions. Surprise, surprise, it turned out that the Egyptian passport belonged to a victim.

Surely the sexual assault in Cologne matters. I'm not sure I understand your response to this.

I didn't say it didn't matter. Please read the second paragraph of my post as many times as you need to understand.