Stun grenades and force were once again used outside Parliament as police tried to subdue protesting parliamentary workers yesterday. Parliament's National Education Health and Allied Workers Union strike entered its fourth day yesterday, with workers bursting into committee meetings to disrupt proceedings.They were demanding improved performance bonuses and also called for Parliament to suspend the vetting of staff.Sonwabile Ngxiza, a researcher in the office of the deputy speaker, was detained by police after being dragged away from the National Council of Provinces.He was later released, with a fine spray of blood on his grey shirt and a large, swollen purple bruise forming on his head.He said he had been detained in handcuffs and had scratches and scrapes from the struggle.A group of riot police also dragged a man wearing a red Nehawu T-shirt down the steps and to the ground while crowds of onlookers standing behind a police line screamed "no, no, no".One woman implored the police holding the line to let them go to where their colleagues were standing on the NCOP steps, saying: "If they are going to shoot, they must shoot us all."However, police would not budge, often physically blocking workers, journalists and MPs with their shields.Medics also later wheeled a woman away in a wheelchair. She said she had injured her foot when one of several stun grenades was used.In the police committee, Nehawu branch chairman for parliament Sthembiso Tembe told MPs to leave the room, saying "no parliament committee is going to sit until our demands are met".Several other committees were also disrupted.Outside, police used at least six stun grenades, with red, green and yellow smoke billowing over the precinct, in a bid to disperse strikers.As the stand-off continued, politicians intervened, negotiating for Ngxiza's release, and for workers to continue their protest peacefully. In exchange, the workers stopped disrupting proceedings.UDM MP Nqabayomzi Kwankwa, EFF chief whip Floyd Shivambu, ANC deputy chief whip Doris Dlakude and DA leader Mmusi Maimane tried to reason with the strikers and the police."Two wrongs cannot make a right. So afford us an opportunity to handle the situation the best way we know. Please comrades," Dlakude pleaded with workers.She later said she had not felt threatened by the workers, and "the only wrong thing" they had done was disrupt the work of parliament. "I haven't seen any workers carrying weapons. I knew I was going to be safe when I went outside. No one was hurt."Kwankwa said they were against any use of "unwarranted force" by the police...