Mumbai: Maharashtra Navnirman Sena (MNS) chief Raj Thackeray and Shiv Sena (UBT) leader Uddhav Thackeray have joined forces to lead a grand public protest in Mumbai against the Election Commission of India (ECI), alleging voter list manipulation and irregularities linked to the Special Intensive Revision (SIR) process. The two leaders have issued a joint call.