Its things like this that give Islam a truly bad reputation. A religion is judged on the acts of its followers, so Muslims acting poorly give Islam a bad name.
Sure, they were just doing their jobs. But, surely, it could have been done with more tact and politeness.
The recent Ops Warta IV proved that law enforcement officers can be quite polite in discharging their duties. Perhaps our brothers and sisters in JAWI missed that class on professional manners.