Crazy rioting video... where is the morality?

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I've been in London for a few weeks now, and constantly riots are affecting small things in my life. Bus routes are changed at times, supermarkets close early, but so far I never really hated the riots nor understood why they are happening. Then I was browsing youtube and came across this video..: (it's very sickening to watch how people can do something like this, don't watch it if you feel it may upset you, not violent just oppertunist) http://www.youtube.com/watch?v=qRCk5o1_opY I was in complete shock and disgust. Where is the morality.....? I'm wondering if anyone understands why the riots are happening?!? And how people can do such a thing as in this video.....