Should Holocaust denial be a criminal offense?

[I spent the winter writing songs about getting better]

In 2015 no, but it was an understandable part of the denazification process in Germany that actually did work pretty effectively.

[I spent the winter writing songs about getting better]

In the US? No.
In Germany today? Eh, probably not.
In Germany in the 40s and 50s? Absolutely.

[I spent the winter writing songs about getting better]

Seeing as how Germany is full of groups and even actual parties (including the NPD which has made it into state legislatures before) that are Neo-Nazi in all but name and remain legal simply by not calling themselves Nazis, not using the swastika and not simply talking about the Holocaust at all instead of denying it I'm not sure said laws are all that effective. I mean it also has the AfD and even some of the most fringe politicians in the CDU/CSU pushing that whole "Germany was the real victim of WWII" stuff as well.