If it seemed like the atmosphere was charged, that’s because it was – charged with the kind of electricity only combat sports mixed with national pride can produce, the kind of raw energy generated from the United States’ best struggling with the elite of Iran and Russia. It was Wednesday afternoon, at Beat the Street’s “Rumble in the Rails” event, featuring amateur wrestling of the freestyle and Greco-Roman variety on a single mat set up in a cavernous hall within New York City’s the always-bustling...