"Yeah, sure, sorry, whatever," muttered Twitter, while making the "wanking" hand motion.
"This phrase should not have appeared in trends, and we're sorry for this mistake," a Twitter spokesperson said in a statement. "This was trending as a result of coverage and horrified reactions to the vandalism against a synagogue in New York. Regardless, it should not have appeared as a trend."
Everything Twitter has said or done about trolls, abuse, harassment, threats, Nazis or "the health of conversations" treats it as someone else's problem. To Twitter these are PR issues, and its solutions are oriented to media coverage. This is why nothing ever really changes, least of all its enthusiasm for product features that might accomplish more. I suspect they can't do better because it is incomprehensible to them. Its understanding of its own product prohibits an understanding of what's bad about promoting "Kill All Jews" a week after 11 were slaughtered by a wingnut. Much that is human is alien to them.