A quick look at the usual places where you'd expect to find them reveals some information:
http://www.stormfront.org/forum/showthread.php?t=239073
Third post in that thread is the National Socialist Movement's call for participants in the meeting, together with a code of conduct for participants (I like their point 5: "Individuals expressing inappropriate political messages may be asked to leave the march."

; 6 is pretty remarkable too.)
The remainder of the thread has some comments on the event, they appear to consider it a public relations victory with relatively little effort required (because getting such media attention would have been very difficult without the riot).