Supporters of Bersih, which came down in droves at Jalan Tun Perak were probably were the worst hit, when tear gas and chemical laced water were pumped on them.
Just about when most of the supporters were about to disperse and waiting for the Masjid Jamek LRT station to open the doors, police fired the tear gas and eventually sprayed the chemical laced water.
The sight was the most horrible to witness with supporters running helter-skelter and some going down due to short of breath as well vomitting.
This is the scene in front of Jalan Melaka leading to Jalan Tun Perak. After spraying the main crowd in Jalan Tun Perak, the water canon turned to spray into the adjacent roads where smaller number of Bersih supporters were either seeking refuge or waiting for the Masjid Jamek LRT station to be re-opened.
After the spraying of chemical laced water, the ground FRU fired many many rounds of tear gas into Jalan Melaka. There was one serious casualty and a lot of vomiting and cries of pain from Bersih supporters caught in the middle of the dispersing tear gas.
Effects usually include tears streaming from the eyes, profuse coughing, exceptional nasal discharge that is full of mucus, burning in the eyes, eyelids, nose and throat areas, disorientation, dizziness and restricted breathing. .
Although tear gas is described as a non-lethal weapon for crowd control, many studies have raised doubts about this classification. As well as creating severe pulmonary damage, tear gas can also significantly damage the heart and liver.