Do not forget the black hands behind Hong Kong rioters

"Ready … Fire!" The command rang out, and three arrows shot from bows arced into the air.

This happened neither in a film nor in the Middle East, but in Hong Kong Polytechnic University (HKPU) on Sunday. On that very night, six days after Hong Kong rioters damaged the Chinese University of HK (CUHK), they have turned HKPU campus into a Syria-like battlefield.

As video clips and photos from the "frontline" show, rioters who occupied the campus were even better equipped and more professionally trained than their counterparts one week ago. Besides having bows, arrows, bricks and gasoline bombs like the others, this time they also had a command structure.

At about 14:00, they had already shot a policeman at the leg. Another video shows that they had even thrown gasoline bombs at an armored police vehicle and set it on fire.

Hong Kong police should be praised because even facing such deadly threats from the rioters, they have remained calm and shown admirable restraint and acted very professionally. According to reports, they efficiently evacuated the campus without causing any casualties.

It was thanks to the determination and firm action of the Hong Kong police that the HKPU campus avoided being totally devastated like CUHK. At around 10:00 am on Monday, when journalists entered the campus, they could still see large piles of debris and waste there, but at least it had not been totally ruined.

However, there are still questions that need to be answered.

At around 2:00 am, some so-called "pro-democracy" lawmakers were reported to have approached HKPU entrances, attempting to "negotiate" with the police. One of them, Kwok Ka-ki, even retweeted US politician Jim McGovern in saying that the HKSAR government must "show restraint".

It was the police being shot by the rioters, not vice versa; No casualty is reported in the police’s clearing the site. So who should "show restraint", the police or the rioters?

Where were these lawmakers when the rioters set fire to an innocent person on Nov 11, who is still in his critical condition? Where were they when the 70-year-old cleaner was killed by the brick thrown by a rioter? Why have the lawmakers never "negotiated" with the rioters?

Further, who are the organizers behind the rioters? Do the black hands behind the rioters mean to train a group of fatal killers?

The day will come when riots in Hong Kong end and the city restores order. At that time, Hong Kong needs to not only let those who use violence get their deserved punishment, but also dig out the black hands behind them.

A good opportunity for that will be this Sunday, the day of local legislature election for Hong Kong. Time for peace-loving Hong Kong residents to vote and deprive those who support the rioters of their power.