What the fuck, part 2451

So I just got home and switched on the TV, only to see some numpties on the screen going on about "local laws for local people", blaming UK Post Office closures on the EU (erm, how, exactly?), and wanting to have elected police officials. Turns out it was a Party Election Broadcast for the Scottish wing of the UK Independence Party, that charming bunch of xenophobes. Oh no, silly me, they're a "libertarian, non-racist party seeking Britain's withdrawal from the European Union". Because, obviously, a political party has to explicitly state it's opposition to racism, that's not just a given. They're at pains to show how inclusive and mainstream they are - from their party history:

In order to protect the party from infiltration by extremists, all party members must sign a membership form supporting the party's principles, which must also be respected by conference. All prospective candidates and constituency office bearers must sign declarations confirming that they have no criminal record and no previous association with extremist political groups of right and left

Now, why would extremists seek to join them? Couldn't be anything to do with their policies and aims, could it? No, of course not, they don't hate foreigners. Just those pesky Eurocrats.