Police fire tear gas as violent protests break out in the capital for a second day . Tunisia 's government failed to protect Chokri Belaid , a rights group says . Prime Minister Hamadi Jebali sacks the government and calls for new elections . The U.S. State Department has urged all parties involved "to exercise restraint and avoid any actions that could further exacerbate tensions, including violence or intimidation."
Police fire tear gas as violent protests break out in the capital for a second day . Tunisia 's government failed to protect Chokri Belaid , a rights group says . Prime Minister Hamadi Jebali sacks the government and calls for new elections . His party says the dissolution is `` not binding '' and is discussing whether to accept it .