They are unencumbered by ethics because they believe that implementing their plans is inherently ethical - no matter how many unethical things they have to do along the way. They also believe that they are ‘special’ people, and that they are the ones that have to make these things happen. When you have that mixture of narcissism, delusional (and hate-filled) ideology, and lack of ethical brakes on what you will and will not do, you have really, really destructive and dangerous people that cannot be trusted in the slightest, who will lie with impunity without the guilt that makes most people's lies overtly perceptible, and who will not stop until they are absolutely made to stop (e.g. Hitler).
This is like a prizefight to them. People like Romney can dance around the ring, throw quick jabs, score points with quick combinations etc., but unless they knockout them out, their ideological narcissistic leftist opponents just go back to their corner and put brass knuckles in their gloves, caustic resin on the outside of their gloves, have their minions put poison in their opponent's water bucket, and then start the next round with a blow below the belt, a headbutt, and a thumb in the eye. That's the way they play, and if you don't know this and have a plan for how to deal with it, you will not succeed.
I say bull Shiite, schmoozing with a hyena only gets you eaten.