Farmers' groups will hold a 'rail roko' on October 18 and a mahapanchayat in Lucknow on October 26 to protest the death of eight people, including four farmers, in UP's Lakhimpur Kheri on Sunday. They have also demanded the sacking of junior Union Home Minister Ajay Mishra and the arrest of his son Ashish, who remains a free man despite being named as a murder accused in the FIR.