Shorten had been meeting families trying to convince them the government has a secret plan to lift the GST to 15% when he ran into this family at a supermarket in Tasmania.
As the ABC News Vine shows, Shorten is touching the child who holds up his finger in defiance.
Then the boy turns to Shorten and in what appears to be a Christian Bale-Batman voice says, "don't touch me."
Earlier at the supermarket (and clearly the more pressing story of the day) Shorten was forced to answer questions about former candidate Stefanie Jones who alleged the ALP was a party of "filth".
But here's that reminder that politicians and children don't always mix.
And a second reminder.
Editor's Note: BuzzFeed News has been told by Bill Shorten's office the boy in the Vine is autistic. ABC News has now deleted the Vine.
Mark Di Stefano is a media and politics correspondent for BuzzFeed News and is based in London.
Contact Mark Di Stefano at firstname.lastname@example.org.
Got a confidential tip? Submit it here.