Punish people attacking world's leaders(even with shoes)heavily just like they point a gun to the leaders' head. Due to former President Bush's case, a lot of people in other nations are copying. I think democracy has turned to the wrong turn. Any kind of attacking leaders of nation should be punish heavily and laws should be formed to protect the leaders. Our society has allow this ruleless habits for too long. Some people are taking advantage of this loophole.
This message is target especially for President Ma. I heard from Taiwanese news channel that opposition in Taiwan plans to throw shoes to President Ma during 228's event. Form tougher rules now so they will think twice before they act.