Lady Gaga egged in Australia for performing in Wheel Chair

Lady Gaga's bad week keeps getting worse as her latest stint had angry fans toss eggs at her and her entourage. While Gaga missed out on getting hit herself, some of the entourage wasn't so lucky.
It wasn't her first time using wheelchair imagery, and advocate groups are not happy about it at all.
Do you think Gaga's reach for shock value sometimes goes too far? Or are the advocacy groups for the people who are disabled making things a bigger deal than they are?