mw13: Giving legitimacy to haters of Jews by letting them say, “see, even your own members think you’re evil” helps bolster anti-Semites’ claims and attitudes, which leads to more people having the confidence and willingness to do things like Kansas City.
Also, it gives more ammo to people who hate the State of Israel, which can lead to more public opinion against Israel which makes it easier for the UN to pass resolutions against Israel. Which, whether you think the State is a good thing or a horrible evil, does endanger Jewish lives.