Michael S. Roth, president of Wesleyan University (CT), writes:  Whenever I’m not busy with campus duties, I go to my shul on Saturday mornings to study Torah. When I returned to the Wesleyan campus after Saturday’s study session, I heard the news from Pittsburgh: A synagogue was attacked by a heavily armed anti-Semite, and there were fatalities. I know the Squirrel Hill neighborhood in that city, and I’ve been to my share of baby-naming ceremonies like the one that was taking place when the killer arrived. Like most Jews, I am also acquainted with hate-filled anti-Semites.