The police utilised a new strategy at yesterday's anti-toll hike protest in USJ's Summit shopping centre. Their weapon - sirens on police cars and trucks - was used to great and irritating effect to drown out speeches by leaders of the protest.

Watch their effort in this two-minute video .

There is also a five-minute video of the protest and the arrest of former Internal Security Act detainee Saari Sungib.

Here's the photo gallery of the protest, which is the fifth of such demonstrations since the toll was sharply increased by up to 60 percent on five major Kuala Lumpur highways since early this year.

The following is the news report - Five arrested at anti-toll hike protest .