Their are clearly things that can be done to reduce social tensions for the people looting.
But lets not forget, looting are opportunists and every society has them - even the super rich 'loot' in different ways.
Rioters however, they weren't their for a free bottle of Vodka. They were their because they feel the police are out of control and un accountable.
And yes, originally the protests were peaceful when a young man was killed.