As someone with Jewish heritage (though not matrilineal) is multi-racial and bisexual, this man offends me on multiple fronts. I will not stand by as though there is nothing wrong with him. Although it has been years since  I have taken part in anything with the intention of confronting nazi ideology, I remember the years that the ARA confronted the HF in Toronto.
Confronting such a person in a family-friendly environment need not be in your face but it can be within earshot, especially if I was there with my children. I would say in a voice loud enough to be heard that the tattoos that man wears (with pride?) are symbols of people who wish me and my family harm and that my children should remember that those symbols are an attempt to cower us into submission - I will tell my children to be wary of such people and be grateful that they show their ignorance and hatred so publicly so that we can recognize the enemy without the dog-whistle politics of those who use 'alt-right' as disguise