Congress veteran AK Antony's son Anil K Antony has quit the party alleging "intolerant calls to retract a tweet" in which he had denounced a BBC documentary on Prime Minister Narendra Modi and called it a "dangerous precedent". Anil Antony, who was part of the Congress's social media cell in Kerala, shared his resignation letter on Twitter today and cited "abuses by ones supporting a trek to promote love" in a caustic reference to Rahul Gandhi's Bharat Jodo Yatra.