we didn't break the rules pls

Is't this is the way malaysia police treat us... we got buckle up our sit bell but they block us and said we didn't. After we argue and he nothing to said then he said the mirror not pass then we show them the certificate that the mirror is not break the rules.. then he argue back we not buckle up our sit bell and ask us explain at court then he straight away open saman but he was scare when i want his employee id... he straight away open saman and ask us drive away.... then why we need police if like this... we got buckle up our sit bell what is our false and why we get saman...