If you are interested in this side of free speech the history of the ACLU (American Civil Liberties Union) is worth looking into. This kind of free speech is t

If you are interested in this side of free speech the history of the ACLU (American Civil Liberties Union) is worth looking into. This kind of free speech is their fundamental. They were founded in opposition to the anti-leftist Palmer Raids in the 1920s however have also supported the freedom of speech of right wing (notably Ku Klux Klan and Neo-Nazis) However they have been criticized strongly for their defense of some issues e.g. posession of child pornography [not creation], prevention of a registry of gun owners, defense of neo-nazis and kkk freedom of speech. There was a leaked internal memo which gets to the crux of a core problem where someone internally was of the strong view was "Speech that denigrates [minority/marginalized] groups can inflict serious harms and is intended to and often will impede progress toward equality". In what seems to be alignment with this, in 2017 they had to announce "the ACLU will no longer defend hate groups protesting with firearms." They have also been criticised over time in not following their own beliefs clearly (simple as they may appear on the outside), notably for not defending Paul Robeson in the 1950s from McCarthyism.