People's experience isn't anecdote either, nor is what they hear from friends in the context of general life. If a friend tells me that they were in a bus and someone punched someone, I don't think that's just anecdote. Further, there is a general issue with actually establishing facts for most things. We don't on a day to day basis have the time to follow the procedures of science or a court case to establish facts, and it's generally not even possible were we to try.
True - but we aren't usually talking about direct experience in this context, nor even second hand from a trusted person (e.g. your friend) - the danger here is the kind of nebulous heresay, purporting to be true, that is, in reality merely an appeal to confirmation bias. And it is often the case that the words of people who aren't racist get misconstrued and extrapolated via confirmation bias to provide fuel for the racist and xenophobic elements. That's why we have to be careful with what we say and how we say it.
That was my point to Rhiannon - to look carefully at what she said for fear of making incendiary comments that are exaggerations of what was actually said that could provide fuel to those who are racist. And that proved to be correct because her summary of the views of that particular police officer (presumably misremembered from 11 years ago) are not what she actually said (if we presume the article is faithful to the original tv interview.
She never said 'that she can't police the county effectively due to Eastern European migrants feuding' or anything close to that. What she actually said was very different, never mentioned anything about 'Eastern European migrants feuding' and indeed the only reference to anything that could be construed as feuding in the article is:
'The force's report warned that officers had seen increases in "critical incidents" and tensions within some communities fuelled by local resentment towards newcomers.'
The implication being that the victims are the migrants and the perpetrators are the locals.