Shane Wescott, 25. and his brother Ryan, 29, are hospitalized with serious head injuries, and two Portland men are charged in the attack.

A petition is urgeing officials to return the 45,000-pound sculpture of bronze and steel to the spot where it once stood as a centerpiece of a 5-acre World Trade Center plaza.

The case has prompted an outpouring of concern that not enough is being done to guard against the negative impact of growing consumerism in Chinese society.

“Catastrophic engine system failure right after takeoff, which is always the most critical phase of flying, leaves very, very few options.”