"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."
The thing to understand is that anything Twitter or says or does about trolls, abuse, harassment, threats, Nazis, and so on, is a PR issue. It is exclusively a PR issue and the solutions are exclusively PR-oriented. Nothing systematic is or will ever be done; no product changes are or ever will be made that truly address these issues, except inasmuch as they can be presented as doing so to embellish whatever business purpose is at hand.