John Oliver said:
Dial the dial back 100 years and every tinpot jiggaboo on every corner of the planet was killing other tinpot idiots for the lulz.
There is a decrease, although we're now more efficient at killing people.
In the last 100 years we've had much bloodshed.
Cambodian genocide under the Khmer Rouge,
Armenian genocide
Genocide under Stalin
Genocide under Mao
Crisis in Darfur/Somalia
Crisis in Zimbabwe
Situation in Iraq and the Iraq/Iran wars as well as the Gulf Wars
Starvation in North Korea and also Iran
All the other conflicts in the Middle East
Korean War
First, second and third indochina wars.
First and Second World Wars
And more...
It's true though, that just recently this violence has curbed on a global scale, but internal conflicts still occur. It's the UN's inability to address internal conflicts, because it would conflict with their mandate, which is allowing them to go on... as well as a lack of will of member states to act.
Particularly because India and China are overtaking the old US power... which is very very worrying. They have never had a will to act and China has done everything within its power to help rogue states and undermine the goals of the UN, as an oppressive non-democratic regime, it is in their interests to do this.
We're going to see a world of war in the near future, I think. China does not have the will to act and has never really sought peace. It was too afraid to launch any kind of expansionist policy in the time of US heregemy, but no doubt this will change... unless huge reform occurs within China and free-press etc. is allowed; which isn't going to happen.
The Chinese government has proven time and time again, to be a government without ethics and a government not working towards global stability.