BJP activists on Monday put up road blockades in West Bengal's North 24 Parganas district as part of a 12-hour Barrackpore bandh called by the saffron party to protest the killing of its member. BJP workers burnt tyres and blocked major thoroughfares such as Barrackpore-Barasat Road and Kalyani Expressway, bringing traffic to a complete halt in the area. A large posse of policemen have been deployed at various places in Barrackpore where the protests are taking place, an official said.