It does matter because this group was formed by the southern democrat party in 1865. The group also tried to suppress Republican votes through terrorism.
The left conveniently ignores this and tries to paint the picture that the group is part of the mainstream right. If you look at the history, the democratic party has moved from outright racism to covert racism.
For example, this is why you get jerkfaces like time4hiddenracism who have agendas like targeting white males and bringing them down because they are both white and male. Their "utopia" has nothing to do with equality but advancing an agenda built upon racial and gender bias.