This has been a hell of a week for politically motivated violence in the US. The mail bombs sent to prominent people perceived as opponents of Donald Trump by a fanatical Trump supporter are just one indicator of how toxic the political climate has become. Today we have the horrendous killings at a synagogue in Pittsburgh where reports say that eleven people have died and six others wounded. That synagogue is in a neighborhood that is very familiar to me from my days as a graduate student in that city, because it is adjacent to where both the University of Pittsburgh and Carnegie Mellon University are and many students and professors (including my thesis advisor) live there.
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