President Donald Trump must be indicted for war crimes, one legal scholar argued for The Hill, and while there are various legal grounds on which this could be done, one particular "atrocity" stands above them all. Bennett L. Gershman is a veteran law professor at Pace University, who also previously worked as a prosecutor for the New York State Anti-Corruption Office. On Monday afternoon, he published a new op-ed for The Hill, expressing how "s…