About the iron cross from the Anti Defamation League website:
"By the early 2000s, this other use of the Iron Cross had spread from bikers to skateboarders and many extreme sports enthusiasts and became part of the logo of several different companies producing equipment and clothing for this audience. Consequently, the use of the Iron Cross in a non-racist context has greatly proliferated in the United States, to the point that an Iron Cross in isolation (i.e., without a superimposed swastika or without other accompanying hate symbols) cannot be determined to be a hate symbol. Care must therefore be used to correctly interpret this symbol in whatever context in which it may be found. "
The germans still use an iron cross on their planes and helicopters.
The US Navy still uses the iron cross for one of its awards. The army used it too in the past.