They are doing it in that way because that is their ceremony.
http://en.wikipedia.org/wiki/Eid_al-AdhaThis is the deal about it.
This shit has a huge background story and has been happening for 1400 years so it is part of their culture.
You cannot change that wheter you like it or not it'll happen and because of this if you grow hate towards that nation it is a shame for yourself.
In my country we kill sheep or calf with machines but arabs are arabs they like hardcore religion and gore because that is their culture.
War never ends on mid-east killing camels like this is no big deal for them , didn't you watch what happened to Ghaddafi ?
Neverending war makes people ruthless , merciless and barbarians .
Childeren in mid-east grew with war , hatred and poisoned minds.
Jews pump hatred against arabs , arabs pump hatred against jews and their inner cults . Do not expect modern acts from these people and do not blame them for being what they are.
I personally dislike arabs , i have my reasons but i feel pity for them because they don't know how to govern themselves without help of big countries therefore they just have wars wars and more wars...
They will not recover till they ran out of oil because when they have oil they are targets of USA and it's supporters like UN and EU .
While these shit going on in there if you call Arabs barbarians and uncivilized animals , i'll just lol and feel pity on you.
At least they don't rain down bombs to market and kill shitloads of civils.