During coverage of the final presidential primary contests Tuesday night, MSNBC’s Chris Matthews took a few digs at the Republicans and their upcoming convention in St. Paul.

MATTHEWS, TO CLINTON CAMPAIGN ADVISER LISA CAPUTO: Well, we’re having a little bit of fun here tonight with the opportunity of Republican conventioneers to arrive at the airport out there and immediately go to the Larry Craig Memorial Bathroom and check in and let everybody know they know some history. Then go to the bridge that fell down in St. Paul. There’s a lot to celebrate for the Republican conventioneers as they get together.

While Matthews’ knowledge of geography is laughable — the section of 35W fell in Minneapolis not St. Paul — it’s hard to see humor in a tragedy that killed 13.