A Maryland high school had its entrance sign slapped in paint with the bigoted message “Jews Not Welcome,” mere days after it held a schoolwide lesson on anti-Semitism. Robert Dodd, the principal of Walt Whitman High School in Bethesda, delivered the news in a letter to parents Saturday as Montgomery County police were looking for the vandal. In his letter, Dodd urged anyone with information about the incident to come forward, adding “this behavior is abhorrent, extremely hurtful, and will not be tolerated at Walt Whitman High School.” The school’s Jewish Student Union and staff had worked together Wednesday to...