CHENNAI: BJP State president and Union Minister of State for Heavy Industries and Public Enterprises Pon Radhakrishnan on Monday termed as undemocratic the arrest of RSS workers while they were taking part in a meeting in Ramathapuram district. He has cautioned the State police force to ensure ‘such mistakes do not recur’. “The incident where a senior RSS leader and about 300 workers were arrested while attending a two-day meeting at Devipattnam is highly condemnable and undemocratic,” he said.