The page shows 5 Cross flags and like 20 others discussing history and who used themThere is no one "REAL" Neo-Nazi flag.
The Sun Cross is used by lots of white supremacists. A Big-ASS Suncross flag is going to be assumed Neo Nazi or White supremacist until proven otherwise.
Which should be REALLY easy to do because anyone flying a flag like that has had to have people say "why are you flying a neoNazi flag?" a lot and so probably has a response all ready explaining the symbolism.
The flag in news story does not look like any of them (wrong symbol & wrong colours)