In the year 2000 I seem to remember that the world seemed mostly at peace (in the Western World at least). The worst thing was the fear of the millennial bug or that some unknown cult might try something weird - which they didn't.
In the UK, there seemed to be peace in Northern Ireland after many decades.
The Balkan conflicts had settled down.
Islamic Terrorism hadn't yet had a proven it was a direct threat to western countries. It was pre-9/11.
Social media hadn't really got going. This was before YouTube/Twitter/Facebook. I mention this only that social media has enabled many uprisings, some of which were violently countered, as well as allowing many terrorists, and insurgents to gain recruits from all over the world in recent years. As well as pumping out propaganda to inspire lone wolf attacks.
So was the dawn of this century really a peaceful time?