Don't know about lib but I ignored emo's point because this, like every other race conversations we've had, he's countering points I haven't made.
This is what my response was about
i can't read emo's mind and don't know exactly what points he was trying to make or what points he was trying to counter. it seemed to me that at least one point he was trying to discuss was mir's assertion of 400 years of institutional racism/slavery since 1619.
ignoring that 30 seconds of googling 1619 and slavery indicates that it is not precisely accurate*, mir definitely did make that point, and whether emo's entire line of posting was intended to address it or not, it definitely had moved in the direction of addressing it by the time liblib jumped in to state that it didn't address it.
*
African workers first appeared in Virginia in 1619, brought by English privateers from a Spanish slave ship they had intercepted. As the Africans were baptized Christians, they were treated as indentured servants.