I forgot to post this before I left, but now that I am back, it was a success.  I guess I was "middle-aged" there.  The majority sported mohawks and were considerably younger.  There were others though that were older and greyer than I.  I'm kinda in the middle but had a good time speaking with folks of all ages.  From my accent, they knew I was a foreigner but that was perfect since it's we who they are demonstrating for.  It was peaceful with no counter protests from the Nazis.  One thing though, I was reminded of that 70's song with the the lyric:
"oooooh that smell, can you smell that smell?"

It was good though, a sense of solidarity.