双方从争吵升级至拉扯，张某显然寡不敌众。西山公安分局东风派出所的2名保安恰好巡逻至此，
O O O O O O O O O O O O O O O O O O O O B-government I-government I-government I-government I-government I-government I-government I-government I-government I-government I-government O O O B-position I-position O O O O O O O