It goes like this. Facebook starts because they're a "business entity" and don't want to lose potential subscribers so they ban any Momo drawings.
Then it gravitates to Blogger.com, owned by Google, they ban blog site that carry such drawings since it against their "policy" on hate or "hate" in this matter.
Then it gravitates to the dot.coms such as paid blog sites or even websites because the hosting site owners don't want "hate" on their servers so they issue a ban on such drawings and will nix contracts on websites deemed "hateful" towards certain groups, namely certain religious groups perhaps.
So, where does the freedom of speech ends with a "business entity?" If Facebook bans such a thing then guess who won and won't stop and aim for similar sites to get them to stop through coercion, hate, threats, court lawsuits, etc..?