Excellent piece indeed. Mother Teresa had said, if you want to make peace with your enemy (or perceived enemy), go talk with them. Talking among friends will not change anything.
I have chosen this formula, and have gone and dealt with extreme right-wingers, and have been able to receive concessions on their extreme rhetoric.
I agree with your last paragraph and what his daughter has said. Now the burden is on Congress to highlight the pluralism aspect of his speech, flood the internet to counter-narratives that you have rightly predicted will float.
With your permission, I will publish this piece at www.CenterforPluralims.com and http://MikeGhouseforIndia.blogspot.com
What do we do at the Center for Pluralism
Center for Pluralism