Memorial installation marred

The interactive audio seat was installed this month as part of the City of Mandurah's Anzac Centenary commemorations.

The WA Opposition plans to introduce a law to protect war memorials from vandalism. It would mean people who desecrate war memorials would face up to 14 years in prison.

The law would target people who deliberately cause damage to a memorial such as a monument, plaque or a public area dedicated to war remembrance.

Currently people who destroy, damage or graffiti a war memorial face a maximum penalty of 10 years' imprisonment, unless the property is damaged by fire.

"As West Australians commemorate the Anzac centenary, it's important that we protect monuments that honour the sacrifice of those who fought for our country," Opposition veterans issue spokesman Peter Watson said.