Apparently, Libertarians have followed the lead of the Democrats and Republicans in rejecting the Congressional candidacy of avowed racist Frazier Glenn Miller. I find these actions a little strange, considering that both the Libertarian and Republican parties have had the name of another well-known racist (and accused child molester) Martin Lindstedt of Granby on their ballots.
As recently as 2004, Lindstedt ran for governor in the Republican primary, where he lost to Matt Blunt (and don't make any jokes, the Republicans did pick the right one). I don't remember hearing any complaints about Lindstedt's well-known racist views at that time. Apparently, it becomes an issue if a candidate has already been rejected by the Democrats.