You are going to get AmericanInTokyo apoplectic.
It doesn’t take much.
Of course, the article clearly says that there are many branches of this nationalist group - not all are murderous nutcases. But he’s so invested in destroying Trump that little factoids like this matter not to him.
I doubt The Donald is even aware of their endorsement. I actually like Hindus. My next door neighbor (actually one house over) invites me for Diwali celebrations.