The Opposition parties held a march in Delhi today to highlight their demand to scrap the suspension of 12 Rajya Sabha MPs and the sacking of Union Minister Ajay Mishra, whose son has been arrested in the Lakhimpur Kheri farmers' death case. "We are all together. We want to say that we are united and those responsible for violence against farmers must be brought to book," Congress's Rahul Gandhi said in his address at the Vijay Chowk. "Everyone knows whose son he was and the defence is understandable, but this individual will be brought to justice," he added, referring to junior home minister Ajay Mishra's son Ashish Mishra.