NYC Fire Commissioner's Son Tweets: "I like jews about as much as hitler"

He's an EMT with the FDNY on the fast track to be a firefighter

The first-responder son of city Fire Commissioner Salvatore Cassano has unleashed a sickening slew of tweets that target everyone from Jews to blacks to the poor.

Joseph Cassano, 23 — who yesterday's Post revealed is working as an FDNY EMT in an apparent bid to fast-track his promotion to firefighter — regularly uses the derogatory term "shwoog" when referring to black people, and once tweeted, "I like jews about as much as hitler."