mark has made comments on it, mark zuckerberg, saying prioritizing content or ads based on their ability to provoke a reaction from you, which is usually the most extreme and polar oizing conten. but mark said at the time, it's okay. ai will save us. only problem is, ai misses lot of problems. in the case of hate speech, only 3 to 5% of hate speech is caught. >> what is facebook saying about what you uncovered and don't they have, do they have a reasonable answer to what you were saying? which is hey, i found this stuff. we found this stuff. why can't you find this stuff and get rid of it? >> exactly. so when we asked facebook about this, the first two ads comparing the vaccine to the holocaust and u.s. nazi germany. facebook said they go against their rules and they won't let