Shrugs...again I didnt see that, what I saw was him using a couple examples for the purposes of his presentation as opposed to dragging on and on about data sets as one would do for a thesis. He was making a short presentation (a summary) of his findings, not a detailed blow by blow examination of every little detail.
If you cannot see the difference between examples being representative for the whole group or not, then there is nothing more I can say.


If you feel so strongy about it why not write him a letter or publish a peer reviewed article that disproves his assertions?
I am quite content to discuss things here.

The reason I feel strongly about is, I guess, that I fear that the idea of less violent and more 'civilised' societies coming about automatically is not true, but that such an idea will stop people working for peace and tolerance.

I do not believe that such comes by itself. I think it has been courageous, compassionate and clear thinking people who have dared work for their ideals in the face of bad odds, often putting their lives in danger because of it.