I'm sorry to break this to you, but you're in the wrong country if you don't like constitutional republics, because the United States of America is in fact a constitutional republic.
I very much dislike neo-nazis, but I have to applaud the gentleman for at least understanding the simplest nature of his government and attempting to educate his countrymen.
I am pretty sure a constitutional republic can be fall under the label representative democracy (which in the case of the US).
You elect you president ; you elect your representatives to congress and senate at federal level ; you elect your representatives and governor at state level ; you elect your mayor and your city council at local level.
That's the definition of democracy.