Hmmm. That's kinda interesting. I guess I have a touch of sympathy for the players on the field that day, but I also think the protesters most definitely got their point across. So, if you measure a protest by "was a solid message sent", then they done good.
For more Info / For the Freeper Record: Here's another article and some fairly informative video:
Hundreds Of Orioles Fans Walk Out Of Camden Yards