Chinese political scientist Li Fan says Chinese leaders can ignore this rising chorus at their own peril.
"The airport bombing shows that when people are hopeless they will resort to more violence," he explained. "It's dangerous because next time someone will think, if no one listens, take even more radical steps, then your voice can reach the top and your case can be solved."
Li, author of the book "The Rise of Civil Rights Movement in Contemporary China," believes the old petition system has very limited role.
"The Chinese government should give people more space, to be able to speak out and participate in local affairs. It's a good way to defuse the anger of the people," said the Beijing-based political scientist. "Otherwise there will just be more and more protests."