Twitter... announced a new policy... prohibit[ing] “content that dehumanizes others based on their membership in an identifiable group, even when the material does not include a direct target.” ...“The dehumanizing content and the dehumanizing behavior is one of the areas that really makes up a significant chunk of those reports,” says Del Harvey, Twitter’s vice president of trust and safety... “Dehumanization is important since it leads to real harm; it's just challenging to define precisely, and it's critical to protect freedom of speech as well,” says [Susan Benesch founder of the Dangerous Speech Project]... “Not all dangerous speech has dehumanizing language, and not all comparisons of human beings with animals are dehumanizing,” says Benesch. “Twitter and other platforms should be careful not to define dehumanization too broadly. For example, it’s tempting to say that any demeaning remark about a group of people, such as ‘the X people are all thieves’ or ‘all corrupt’ is dehumanizing. That one is not dehumanizing, since corruption is a specialty of humans.” ...[R]eal-world incidents have proved challenging for other social media companies to police effectively... Facebook, for instance, has been accused of helping to facilitate the Muslim Rohingya crisis in Myanmar, which the UN is now calling to prosecute as genocide.