https://en.wikipedia.org/wiki/..._Not!
https://youtu.be/MCapEm8Nu7c?t=104
There's nothing intrinsically wrong with the insincere disclaimer but prefix, but people always use it to falsely claim they're not racist.
https://en.wikipedia.org/wiki/I%27m_not_racist,_but...
https://www.youtube.com/watch?v=43gm3CJePn0