THIRUVANANTHAPURAM: Chief Minister Pinarayi Vijayan has come forward afainst the Railways' action to remove the Wagon Tragedy mural from Tirur station. Pinarayi alleged that the Railways is implementing an agenda set by Sangh Parivar. "We should realise why the wagon tragedy mural painting is an issue for Sangh Parivar. RSS has been trying to rewrite our history using their power. The freedom struggle is an alergy for them', said Pinarayi.