A Single Factor Is Common to All Communal Riots During Religious Processions in India https://thewire.in/communalism/riots-religious-processions-ram-navami
No cause of interfaith riots has been as recurrent and widespread as the religious procession. The key factor in causing and preventing such riots has always been the route.
Routes of Wrath - Report on violence during religious festivals Ram Navmi and Hanuman Jayanti (april 2022) https://www.livelaw.in/pdf_upload/routes-of-wrath-report-2023-2-465217.pdf 8 April A REPORT BY
CITIZENS & LAWYERS INITIATIVE FOREWORD BY Justice Rohinton F. Nariman , EDITED BY CHANDER UDAY SINGH
Edited excerpts in https://www.nationalheraldindia.com/india/religious-processions-rioting-in-the-name-of-god
See also South Asian Citizens Web Communalism Repository of Articles : http://www.sacw.net/rubrique14.html &
http://www.sacw.net/DC/CommunalismCollection/ArticlesArchive/index.html