Who says that the terrorism issue will not impact upon daily life in Australia? A town’s fun run was cancelled because of the high cost of guarding against the threat of terrorism;
https://www.jihadwatch.org/2019/07/australia-town-cancels-annual-fun-run-over-high-costs-of-guarding-against-jihad-massacre
https://www.dailymail.co.uk/news/article-7211755/Country-towns-annual-fun-run-cancelled-costs-guarding-against-terror-attack.html
“A country town has been forced to axe their annual fun run as the costs to protect against a potential terror attack are too high. The rural town of Bendigo, in country Victoria, won't be putting on their yearly fun run in November as planned due to safety concerns. A large chunk of the cost for setting up the run would come from the installation of concrete bollards - which are worth tens of thousands of dollars. 'We are disappointed that this great event is being cancelled but safety is the number one priority,' Bendigo Health chairman Scott Elkington told the Bendigo Advertiser. He said after costs for anti-terrorism measures are added together, the event would no longer be feasible. Mr Elkington said the amount of time needed to set up and pack down a number of barriers would be another challenge for organisers. There's also a requirement to have 40 vehicles and trucks parked next to the bollards to stop terrorists driving into crowds of runners and spectators.
The same economic arguments would apply to most social events, so it looks like one of the benefits of the vibrant, diverse society, is that nothing much can happen at all. We must all stay home, nervously peering out from behind drawn curtains.