barcelona first hundreds catalan mayors summon answer question back ban oct. referendum independence spain appear state prosecutor tuesday amid cheer chant supporters first three mayors declare exercise right remain silent association municipalities independence ami say years separatist feel industrial northeastern region come head less two weeks fiercely pro-independence regional government call referendum split spain madrid declare referendum illegal constitutional court suspend vote approve regional government early month tuesday police continue search ballot box vote paper campaign leaflets raid offices spain big private delivery company unipost several catalan cities clash protesters far 745 948 municipal leaders say provide venues referendum vote crime say marc solsona mayor town mollerussa one nearly 750 mayors face charge civil disobedience abuse office misuse public fund leave state prosecutor office barcelona mayor serve people commit people able vote oct. accordance law pass catalan parliament happen important say solsona smile kiss grip hand dozens clap supporters gather outside state prosecutor office enter chant alone consider privilege mayor represent townspeople interest political financial say 63-year-old pensioner angel tena travel barcelona support mayor spain civil guard national police force tuesday seize 45,000 envelop pack cardboard box catalan government ready send notify people around region referendum spanish interior ministry say police raid unipost offices terrassa dozens people gather outside chant occupy force hand vote paper fly catalan flag lay carnations police cars late protesters scuffle catalan police call move protesters prevent civil guard leave premise accord reuters footage police hit several protesters outside offices truncheons unipost confirm raid without give detail although poll show less half catalonia 5.5 million voters want self-rule wealthy northeastern region want chance vote issue catalan mayors exercise right remain silent referendum question