Sad story. Though I don't think people are more prone nowadays. We just hear about it more and there are millions more people now.
In the Old West, you may have had a gang of outlaws shoot up a small defenseless town. In Roman times, there were atrocities. We probably have LESS nowadays because of better law enforcement.
We are, and always have been, just humans, no more, no less. There is no "increasing of lawlessness." Compare today with the Inquisition times and/or medieval times. Well, you probably get my point.
Pat