I agree that subjects of this nature needs to be discussed in the open. The US is a very good country compared to others, but still lacks the leadership that prevents it from making big mistakes. Trump may never get elected because of his bigotry, but there are many Americans that think the same way he does. The potential is still there for people like him to become president if they're not outward with their bigotry.
People forget that early in our history, the Catholics, Irish, and Italians were discriminated against. On the West Coast, the Chinese and Japanese were discriminated against before and during WWII.
Yes, let's keep talking about this subject, and challenge all the bigots.