> hasn't facilitated any increase in xenophobia that I'm aware of
Then you haven't been paying attention.
> South Africa by contrast does not have open borders, and is currently going through another bout of violent xenophobia.
Arguably a legacy of the time when it did.
> Then you haven't been paying attention.
I live here, I think I'd notice if events like the current Belfast riots happened on a more regular basis.
> Arguably a legacy of the time when it did.
I'm from there, so I'd be interested to know what time period that would be?