Why were the Iraqi detainees made to pick up garbage?

Germany—The commander of three British servicemen accused of mistreating Iraqi detainees testified Friday that he told soldiers to make their prisoners "work hard" picking up garbage but saw no abuse. A Danish army captain and four military police sergeants, meanwhile, were formally charged with mistreating Iraqi detainees at a military camp near Basra last year.
Question: Why were the Iraqi detainees made to pick up garbage?

Palestine—Palestinian protesters clashed with Israeli soldiers on Tuesday near the West Bank Settlement of Ariel, where Israel has resumed construction of one of the most sensitive sections of its controversial wall separating the two sides. Palestinian Prime Minister, Ahmed Qureia, charges that the route of the wall, dipping into the West Bank, amounts to an Israeli land grab.
Question: Where did the clash happen?