I start with the Tesla crash in Florida and the huge amount of publicity it got. Some people will have an immediate gut reaction and say "I'll never trust my life to a self-driving car." But fast forward a few years when a car with some level of autonomy becomes more common and instead of 1 fatality, there are 10 or 100. Some people will say "I don't want a self-driving car on the road with me." Fear is a powerful motivator, and I could imaging gory accident photos getting captions like "Share if you don't want to be killed like this. Ban robo-cars!" on Facebook. All the factual arguments in the world won't dislodge a scary meme once it gets implanted.