Who would you kill?
Uppity bicyclist. When you suggest that perhaps, just maybe, it's not the safest notion in the world for him to ride his bike in the middle of the lane on a congested road with poor visibility, he is instantly hostile. "I have every bit as much right to the road as you!" he snarls, as if this were remotely your point. And then, having grandiosely claimed equal rights, he casually blows through the red light at which you must stop.
"Daisy, Daisy, give me your answer, do" bicyclist. I deal with this guy daily. For some reason, hordes of him have decided that Metamuville is an awesome bicycling destination. Thus do these hordes wobble slowly down 2-lane, 10-mile long, 55 mph Metamuville Road, which alternately has a wide berm and no berm whatsoever. You're driving along at the speed limit, and suddenly you have to slam on the brakes to keep from killing a 'tard in yellow spandex who drifted in your path because he's trying to take a photo with his iPhone.
WINNER: Daisy, Daisy is tempting, since the iPhone thing just happened to me an hour ago, but math don't lie: giant dick > clueless moron. Uppity Bicyclist wins a spirited battle.