So what does the rest of the T-Shirt read.
I fail to see how you can link "Dumb and Dumber" to terrorism.
There has to be more than what has been quoted here.
As for banning the display of the Australian flag by Australians at an Australia day event then clearly it is time to fight back.
First of all I hope no Australian attends that event, let the promoters who are instituting the ban go broke.
Second of all.....no forget that. I'm sure it wouldn't get past the PC moderators here.
Diplomacy will not win this war, only eradication will.