[I posted a version of that comment, then deleted it, jdc replied to the earlier version too quickly though. I've screened that reply as it was dangling. He's asked me to repost his reply here as he has to catch a train]

I'd appreciate it if you could apologise for upsetting saffie - at least make it clear you don't believe she's a racist or similarly bad.

Of course I don't, I'm sorry if it appeared that way. I was engaging in the normal philosophy undergraduate pastime of constructing a logically similar argument to one which appears acceptable in order to explain why I don't consider it valid.

Or do you really think smoking is as unpleasant as racism?

It depends what racists do. I'd rather sit next to a table of racists than a table of smokers, but evidently beating someone up for being black is worse than blowing smoke on them.