Yes. People live in countries, and sometimes people riot when they're angry.
This is a very asinine question. Riots happen in First World countries, too. Most of them are small in comparison to what's going on the Middle East right now, but they happen. It was just a couple years ago that France experienced a wave of riots after two teens got electrocuted while hiding from police, and some of the more notorious of riots occurring in the US include the Los Angeles riots following Rodney King's trial, the Watts riots of 1968.. and just take a look at some of the examples on the related link.
Hindu and Muslim riots.
Hough Riots happened in 1966.
Priestley Riots happened in 1791.
Jaffa riots happened in 1921.
Nika riots happened in 532.
Stonewall riots happened in 1969.
Tonypandy Riots happened in 1911.
Meat riots happened in 1905.
Gastown Riots happened in 1971.
Båstad riots happened in 1968.
Hădăreni riots happened in 1993.