It is no victory to cancel one totalitarian dictator's utopia, if it is only for the purpose of replacing it with a "more acceptable" totalitarian dictator's utopia.
If your fellow citizens think fascism is preferable you need to ask why? not how do we shut you up? If you do, you are already one of them, and are just protecting you brand copyright.
If your "normality" involves telling you, for the common good, what is acceptable to read, what is acceptable to say, what is acceptable think, you are not living in a civilized culture, because you are only one step away from the midnight knock on the door to remove you from decent people, for "re-education" in a fun little camp somewhere.
Interesting how nothing in the cartoon implies that another totalitarian dictatorship should take over and it's exactly where your mind went when existing dictatorial ideologies are threatened.
So civilized societies should rationalize having discussions of the value of white racist ideologies and why they think they're superior to everyone else while ignoring the manipulation of the political and economic dynamics of the culture to suppress non-white people. There might be some value in spreading a dogma that has done nothing but justify the oppression of others.
Fuck a "civilization" where they are encouraged enjoy the "free speech" of rationalizing the suppression and slavery of human beings they believe are lessors. That idea of civilized is sick and based on the "values" created by the cultures represented in the cartoon.