Well, none of the publication titles on this page contain the word "surveillance". I was able to find an interview (https://medium.com/ethics-models/interview-with-dr-alex-hann...) where she says we're "embedded in a system of racial surveillance capitalism", but doesn't really discuss it or mention any specific times when bad AI caused people to be wrongly surveilled. If you know of any specific explanation that she's provided, I'd be interested to read it.

But the most likely explanation IMO is that Hanna isn't using the term "surveillance" as a pointer to any concrete idea about what will go wrong. It seems to be just an all-purpose explanation for why AI models need to respect her sensibilities.