on this anti-veggie site (link if you want to read some crap http://www.secondopinions.co.uk/vegetarian.html )
"Vegetarianism and militancy
These days, it seems that there are more and more reasons to protest against the way our society is being run. There are voices of disseat everywhere. (It is the reason for this website!) but there is a much more worrying trend – violent protest.
Have you noticed the increasing numbers of occasions when small groups of very militant people demonstrate against all sorts of things: animal experiments, butchers' shops, new roads, footpaths, nuclear power stations, civil rights, homosexuals' rights or anybody else's rights. The odds are that the majority are vegetarians.
As we know, when it needs food, our body indicates this to us with the feeling of hunger. But there are also other signals if specific nutrients are deficient. Meat is the best source of several nutrients. When our bodies are deficient in these, we become irritable and aggressive. This is a perfectly natural signal built into our genetic make-up over our evolution: our bodies are telling us to go out and kill something to eat. This is why strict vegetarians tend to be so vociferous. It is a trait that was recognised long ago; it was, after all, the vegetarian Cain who killed the carnivorous Abel, not the other way round. The vegan Kikuyu tribe in Kenya were the perpetrators of the murderous Mau Mau in the 1950s, not their wholly carnivorous, but peaceful, neighbours, the Maasai.
The butcher's shop in my village has had its windows smashed so often that it is now boarded up when it is closed. Have you ever heard of a meat eater bombing a greengrocer's shop? "
No, possibly 'cos omnivores eat veg too?
And maybe we're irritable and aggressive over seeing cruelty and injustice that provoked us to go veggie in the first place(our brains still powered by meat on that decision)?!?!?