@YouTube I'm disgusted by these "PragerU" propaganda videos and I'd like a way to opt out of them completely. They're ruining my day when I'm watching a video and they pop up. Thanks, can't wait for you to resolve this issue.
Have you tried personalizing your ad preferences: https://goo.gl/9in6fd ? Also, you can submit feedback about ads using our Adwords feedback form: https://goo.gl/KcTgwH . Hope this helps.