You probably did without realising - apparently that is the date Rome was sacked, for the first time.
It's curious how people fail to see things in perspective though. The reporter asked an expert whether it was like 9/11 for the Roman empire, clearly not understanding it's significance or scale. I'd guess a closer model would be if the Canadians and South Americans joined forces, along with neo-confederates and pillaged Washington DC for a week. Though in fairness, Rome was in far greater disarray by this time than American has been since it's peak of power mid-last century.