Private security guards attacked more partially due to the increased numbers of private security officers being used in place of police officers. In 2011 in the USA, 37,000 security guards, which includes nightclub and bar bouncers, were attacked. These guards incurred 13,700 injuries. 114 security guards were killed on the job. (Data from Private Officer International.)
The increase in attacks on private security officers is leading to these guards requiring more training as more guards are hired because of the reduced police presence in many communities. These private security guards are employed by private companies to prevent incidents, but sometimes incidents to do happen and the guards have to react appropriately. A police officer said he would like to see more officers and bouncers get better training.
In a recent incident in North Carolina, a private security guard was shot and killed trying to break up a fight and disperse people outside a restaurant.