Readers discuss the Auschwitz anniversary and a Musk speech. Also: Threats against Dr. Fauci; resign, or else; police use of tasers; aging women; an invitation to letter writers.

World leaders, lawmakers, senior defense figures and other officials will attend the Munich Security Conference, which takes place from February 14 to 16 and has been held since 1963. But not invited are Alternative for Germany (AfD) and the populist Sahra Wagenknecht Alliance (BSW), according to conference chairman Christoph Heusgen.

"Children should not be guilty of the sins of their parents, let alone their great grandparents," Musk said, apparently referring to Germany's Nazi past.