Ok so I'm a Sox fan. But I think the light up sign was a very cool idea, and if the getting in trouble didn't involve police or being tossed out was probably well worth it.
It they had the same thing at Fenway I'd probaly use a simiar message.
I know it's all for the best, but the teams making things too "family friendly" Takes a bit of the edge off the rivalry. The fans are even too nice to the other team these days. I recall seeing a rookie Yankees player go into the stands after a ball at Fenway and exiting the mob without the ball. Also without his hat and glove, and nearly without his jersey. Umps and security got the glove back, but not the hat. And likewise the Sox players knew to keep clear of the crowds at Yankee Stadium.
Steve B