The Latest: Iraq says thousands take to streets in south

Iraqi officials and a member of the semi-official human rights commission say thousands of protesters have taken to the streets in two southern cities and have set fire to political party offices.An Iraqi security official and the rights commission official say protesters in Nasiriyah have set ablaze the offices of two political parties in the restive southern city.The two officials said the security forces responded with fire, but there was no immediate word on casualties.