JOHANNESBURG - An investigation has started about a bumper sticker reading "You can run but you will die tired" - after all, it was on a police pick-up.The Johannesburg Star reported that North West police spokesman Brigadier Thulani Ngubane was shocked to hear that the sticker, bearing an image of a rifle, was on the back of an unmarked police car."We will investigate, establish who drives the vehicle, and steps will be taken."'IT'S UNPROFESSIONAL'According to the report the vehicle was parked near where 34 men were killed during a confrontation with police at Marikana, North West, on August 16 2012.The police spokesman said "personalisation" of police cars was prohibited.SA Institute for Security Studies researcher Johan Burger said the sticker was unprofessional and came at a time when the police were arguing before the Farlam Commission of Inquiry that they acted appropriately at Marikana."Clearly someone must be acted against in terms of the police service's disciplinary code," he said. "The message says something about the occupant of the vehicle."