Maybe the mob didn't know who he was but those who set him up sure did... some know him from the Contental Army where the Marylanders had a great presents. Remember shots had been fired. It was a volatile situation & Harry Lee & his constituents gave themselves up to men/authorities they trusted.
I sure agree whoever set up the situation knew exactly who was in that building with the firebrand newsman. They were all Federalists and that's all the mob needed to know! Think Harry had a really good idea of who the brains were, as a matter of fact, but couldn't prove it. Harry was always a good looking fellow but he wasn't after they got done - somebody tried to chop off his nose, poke out his eye and dropped wax in the other one to see if he was alive or faking. As it happened he was quite alive but couldn't move. After that he was so disfigured he scared kids. Pretty bad.