Worst, most obnoxious fans I’ve ever encountered by far.
Well, Philly's worse.
But that's not saying much.
A particular set of Giants fans have always been somewhat obnoxious. Back in the 80s at the Stick, there was a fenced area in left field. When the Dodgers were in town, drunken fans would jump down from the bleachers, run down by the fence, and chuck batteries at the Dodger left fielder. This was done only at night games...the day game crowd was a different, more civilized bunch.
Eventually, they had to close off that area to fans.