A detailed map on state's ban on nazi or communist symbols.  States where communist symbols are banned
  States where certain communist symbols are banned with some exceptions exist
  States where nazi symbols are banned
  States where certain nazi symbols are banned with some exceptions exist
  States where both nazi and communist symbols are banned
  States where both nazi and communist symbols are banned with some exceptions
  States where there are no bans in effect
  States where they don't have direct regulation of nazi and/or communist symbols but have regulation that enforce of use of symbols to communicate hatred in a public place
The map originally was from BlankMap-World.svg, later switched to Blank Map with US subdivisions.svg. The data is from Post–World War II legality of Nazi flags and Bans on communist symbols.
BlankMap-World.svg: Canuckguy and many others (see File history)
Blank Map with US subdivisions.svg: JayCoop
Derivate version: Adhiansyah Ancha