Carrying holstered side arms is hardly "wielding guns".  The White Nationalist may be offensive, but they are not stupid. Given the recent history of those likely to counter-protest it would be idiotic to show up defenseless. Helmets & shields seem appropriate attire. Clubs are over the top, though. Let the other groups take the rap for that.

Additionally, what would you say about a military group (VMI?) marching in a parade with helmets & rifles?