Attawapiskat Chief Theresa Spence pauses after speaking with journalists about her hunger strike in a teepee on Victoria Island in Ottawa, December 27, 2012. REUTERS/Chris Wattie ANALYSIS: The many faces of Idle No More promote conflicting views Idle No More protesters accused of 'dangerous' rail signal tampering Via Rail service back on track after Idle No More blockade Idle No More protests block border traffic, delay Via Rail passengers Chief Theresa Spence vows to continue hunger strike until feds and First Nations meet

OTTAWA — Peaceful First Nations demonstrations could "get a lot uglier" if the feds don't meet demands for a substantive conversation between aboriginal leaders and Prime Minister Stephen Harper, NDP MP Charlie Angus suggested Wednesday.

"This is a situation that really doesn't need to boil over," Angus said. "There is a lot of frustration ... let's try and settle this in a way that's just and fair."

Angus says he plans to meet Attawapiskat Chief Theresa Spence in Ottawa on Thursday. The chief, who represents a poverty-stricken northern Ontario reserve in Angus' riding, has launched a personal protest at Ottawa's Victoria Island for three weeks.