I never quite understand how the Daily Mail Hyperlinks work. Before I saw the proper headline it seemed as if the woman were saying "you guys used slaves" as in, you used to employ them also. This is, perhaps, also true to some extent, but is not what the woman was saying. I wish they'd stick to a boring number reference for each page.
And yes, racist. Totally irrelevant to a seat-moving argument, for example. Also, a cast-iron way to identify a (whatever)ist is whenever they say "Some of my friends are (whatever)"...