I’m sure when terrorist do gain entry to a country they list it as their reason for visiting on their visa applications. “Here to do a terrorism, give visa pls”.
There were two incidents of pedestrians being deliberately killed in Melbourne back in 2017 but neither were terrorist (both mental health and drug issues)
https://en.m.wikipedia.org/wiki/January_2017_Melbourne_car_attack
https://en.m.wikipedia.org/wiki/December_2017_Melbourne_car_attack
Probably the Dec 2017 one who was an Afghan refugee. 1 dead and 17 injured.
and the fella who did the December one wasn’t visiting on a visa like numbnuts is suggesting, he had lived here for 13 years at the time and had Aussie citizenship.
There was a vehicle that ploughed into pedestrians near parliament with the motive determined as terrorism… in the UK? That’s the only thing I can think of.