Yes, it's a basic function of any customs and quarantine organisation. Australian Border Force don't care if you have memes mocking our PM or DJT. Inspection of electronic devices only happens when there's evidence of a crime.

> Inspection of electronic devices only happens when there's evidence of a crime.

This simply isn't true, I've seen video of them going through people's devices at the border without any probable cause. Arguably, the traveler was being a bit of a c*nt and they responded in kind but had no reason to suspect anything.