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.
Gordon Riots happened in 1780.
Porteous Riots happened in 1736.
Potato Riots happened in 1834.
Newlyn riots happened in 1896.
Cholera Riots happened in 1830.
Peekskill Riots happened in 1949.
Yizhou riots happened in 2002.
Canboulay Riots happened in 1881.
Orange Riots happened in 1870.
Watts Riots happened in 1965.