Samajwadi Party workers clashed with police in several parts of Uttar Pradesh Tuesday after the state government clipped the wings of their president Akhilesh Yadav, preventing him from flying to Allahabad on the grounds of law and order. Protests broke out in Allahabad, Jaunpur, Jhansi, Kannauj, Balrampur, Jalaun, Azamgarh and Gorakhpur, among other places, where SP supporters smashed windscreens of vehicles and clashed with the police. Roads were blocked in Gorakhpur.Yadav said he was stopped by authorities at the Lucknow airport in a bid to prevent him from visiting Allahabad, triggering outrage by party lawmakers in the state legislature and workers outside the airport.