Mangaluru: On Thursday, the Association of Dakshina Kannada District Auto Rickshaw Drivers and Owners Unions, backed by various like-minded unions, staged a large-scale protest in Mangaluru, demanding the revocation of the permission granted to operate electric auto rickshaws in the district. The protestors, who are primarily concerned about the impact on their livelihoods, urged the Deputy Commissioner (DC) Mullai Muhilan to reconsider the decision.