This strikes me as too simplistic solution. I tried to find papers on how demonstrations become riots, but my google.scholar-fu has failed. Anyone got good review papers on this? (If none exist, there is a goldmine there for social scientists.)
In 1773, King George was upping taxes while not providing adequate representation. Colonists thought this was an abuse of power, so they robbed and looted a huge boat filled with tea, which set off events that led to the American Revolution. Look it up, I'm sure there's a wikipedia article or something, it's pretty famous event in history.
Edit, are you also insinuating that's the only 'rioting' they did and then magically the USA just formed out of nothing?
This is HN. You don't need to project motivations on people when pedantry is sufficient.
(Your Armani analogy doesn't work however - a better analogy would be destroying property owned by, say, Halliburton.)