You assume people would use the system as designed. They'd have no incentive to do so. Don't like someone's ethnicity? Downvote. Don't like electric cars? Downv

You assume people would use the system as designed. They'd have no incentive to do so. Don't like someone's ethnicity? Downvote. Don't like electric cars? Downvote. That would be the overwhelming majority of votes, much like how car horns are overwhelmingly used for non-safety related honking.