Transgender Day of Remembrance

Is today, which seems fair enough. I have no objection to this memorial project, and wholeheartedly condemn any violent attacks on people of any sort. But I do find the selection criteria the organisers use a bit odd, viz:

"Although not every person represented during the Day of Remembrance self-identified as transgendered — that is, as a transsexual, crossdresser, or otherwise gender-variant — each was a victim of violence based on bias against transgendered people."

If the victims didn't identify themselves as transgendered, how do we know their attackers identified them thus? (We're reminded that most such attackers have never been caught, so we can't ask them.)

I'd like to stress I'm not sneering at this sort of project, but the sloppiness of the thinking undermines what is no doubt an admirable notion. Don't go attacking or killing anyone, that's what I suggest.