More than 800,000 protesters who are Marathas disrupted Mumbai traffic and strained its railway network today as they pressed their demands for reserved quotas in government jobs and colleges for students. The Marathas are a politically powerful group because they constitute 33 percent of Maharashtra's population. Chief Minister Devendra Fadnavis said today that his government supports affirmative action policies for the dominant caste. But he offered no schedule for implementing new policies to benefit Marathas.