Where can I report topic for promotion of hateful/Nazi/non-copyright material?

DrPvtSkittles in Steam tries his hardest to save his mod for Starbound, which features a mouse mod with strong references to Nazism.

People are free to load it and check before acting on my report. Please delete the mod, and put penalties on the user for promoting the theme. Thank you.

You find instructions on how to report a user here: