Frank Zappa had this panty quilt constructed from some of the ladies’ undergarments that were thrown on stage (he asked for it) during the Tinseltown Rebellion tour.
Google "panty rap"
What do people aim to gain by throwing things at stage performers? Who pays to go to a concert that they hate just to throw something at a performer they hate? Their has got to be something that inspires that sort of compassion! --- lol