Nissan 's posters say it shows Shiite Muslim police driving into crowds of demonstrators . Truck drives over person in video , which posters say was recorded this week . At least seven people were killed in anti-government protests in Ashura Sunday , authorities say .
Video 's posters say it shows Iranian police driving into crowds of demonstrators . Truck drives over person in video , which posters say was recorded Sunday . Seven people were killed in anti-government protests in Iran Sunday , authorities say .