I don't think so. There are so many fronts on the war on bigotry and little progress has been made in 100 years. This feels like an innate property of human beings and humans will always be easy to manipulate to make them hate those that look a little different. About the only practical thing that might help is we criminalise bigotry that might damp it down a lot but people will still behave in bigoted ways they can get away with.