A former federal Aboriginal affairs minister under the Stephen Harper government is doubling down on his social media claim that the finding of "genocide" by the National Inquiry into Murdered and Missing Indigenous Women and girls was "propagandist."

Bernard Valcourt, who was Aboriginal affairs minister from 2013 until the defeat of the Harper government in the fall of 2015, blasted the inquiry's conclusion that the thousands of murdered and missing Indigenous women and girls were victims of a wider "Canadian genocide" inflicted on Indigenous people.

"How far do those activists will go? What has been the cost to Canadians for this propagandist report? What have we learned that we did not already know?" said Valcourt, who now lives in Edmundston, N.B., in a tweet posted on Friday evening.

"Who feels better in Canada among First Nations for that thunderous silly conclusion that all we wanted was to kill them all?"

Valcourt faced an immediate backlash on Twitter that continued into Sunday. That included reaction from leading Indigenous voices like Cindy Blackstock, who heads the First Nation Child and Family Caring Society, and Pam Palmater, chair of Indigenous governance at Ryerson University in Toronto.

How far do those activists will go? What has been the cost to Canadians for this propagandist report? What have we learned that we did not already know? Who feels better in Canada among First Nations for that thunderous silly conclusion that all we wanted was to kill them all? —@BernardValcourt

Valcourt remained unbowed during a Sunday morning interview with CBC News.

"I take offence to Canada being accused of genocide. My comprehension of genocide is measured by what genocide really is," said Valcourt. "I don't think it serves any purpose to call the action of the government genocide because it was not genocide."

Valcourt said "First Nations got a bad rap from colonialism that has given birth to this country."

But he said that using the word genocide "won't solve anything."

The national inquiry said the evidence it gathered led it to conclude that missing and murdered Indigenous women and girls were the victims of a "Canadian genocide."

Dear Sir, The CDN Human Rights Tribunal found that the services INAC delivered under your tenure as Minister were racially discriminatory negatively impacting over 165,000 First Nations children. Instead of implementing documented solutions - you fought it. What did you learn? <a href="https://t.co/62Uti26SNi">pic.twitter.com/62Uti26SNi</a> —@cblackst

The inquiry said the genocide was "empowered by colonial structures" such as the Indian Act legislation, which was enacted in 1876, the Indian residential school system, the Sixties Scoop, the forced sterilization of Indigenous women and the child welfare system, which it called a "tool of genocide."

The inquiry, which cites contemporary scholarship on genocide to support its finding, said it would be publishing a supplementary report on the legal definition of genocide and its application to Canada and posting it on its website at a later date.

Where was your outrage and denial against <a href="https://twitter.com/SenSincmurr?ref_src=twsrc%5Etfw">@SenSincmurr</a> Truth and Reconciliation Report which found that in its dealings with Indigenous peoples Canada is guilty of cultural, physical and biological <a href="https://twitter.com/hashtag/genocide?src=hash&ref_src=twsrc%5Etfw">#genocide</a> Are you saying Indigenous WOMEN are less credible? <a href="https://twitter.com/hashtag/sexism?src=hash&ref_src=twsrc%5Etfw">#sexism</a> <a href="https://twitter.com/hashtag/racism?src=hash&ref_src=twsrc%5Etfw">#racism</a> <a href="https://t.co/VeyUK11ZUq">https://t.co/VeyUK11ZUq</a> —@Pam_Palmater

The report also criticized Valcourt for claiming while he was minister that 70 per cent of homicides of Indigenous women were caused by Indigenous men. The report said the RCMP data used by Valcourt to make the claim was flawed and inaccurate.

The Canadian Museum of Human Rights in Winnipeg also now deems the treatment of Indigenous peoples in Canada as a genocide.

Crown-Indigenous Relations Minister Carolyn Bennett weighed in against Valcourt on Sunday with a tweet blasting the former minister and calling on Conservative leader Andrew Scheer to denounce him.

"Distressing to see @BernardValcourt displaying such ignorance," tweeted Bennett. "@AndrewScheer needs to denounce him & ask him to join Senator (Lynn) Beyak on the cultural sensitivity that seems to be necessary for all Conservatives."

Distressing to see <a href="https://twitter.com/BernardValcourt?ref_src=twsrc%5Etfw">@BernardValcourt</a> displaying such ignorance. <a href="https://twitter.com/AndrewScheer?ref_src=twsrc%5Etfw">@AndrewScheer</a> needs to denounce him & ask him to join Senator Beyak on the cultural sensitivity that seems to be necessary for all Conservatives. <a href="https://t.co/H160xF8Xkx">https://t.co/H160xF8Xkx</a> —@Carolyn_Bennett

Sen. Lynn Beyak was recently suspended from the Senate and kicked out of the Conservative caucus for refusing to pull down racist letters against Indigenous people on her website.

"It's difficult to imagine how someone who once held the job as minister of Aboriginal affairs could be so ignorant and insensitive," said Bennett in a statement sent to CBC News. "To dismiss this vitally important report as propaganda without even having read it demonstrates the kinds of attitudes that have lead to this national tragedy."

The Conservative party distanced itself Sunday from Valcourt.

"Mr. Valcourt does not speak for the Conservative party of Canada with these unacceptable comments," said Conservative MP Cathy McLeod, the shadow minister on the Indigenous affairs file, in a tweeted statement.

Thank you <a href="https://twitter.com/Cathy_McLeod?ref_src=twsrc%5Etfw">@Cathy_McLeod</a> for speaking out. First Nations look forward to your continued support. <a href="https://twitter.com/hashtag/cdnpoli?src=hash&ref_src=twsrc%5Etfw">#cdnpoli</a> <a href="https://t.co/sCp9ejY9Ex">https://t.co/sCp9ejY9Ex</a> —@perrybellegarde

McLeod's statement said that former interim Conservative leader Rona Ambrose endorsed the inquiry and current leader Scheer has also supported it.

Ry Moran, executive director of National Centre for Truth and Reconciliation in Winnipeg, which is the archival repository for historical records on residential schools, also blasted Valcourt on Twitter.

Moran pointed out how the former minister remained seated during a standing ovation at a 2015 ceremony where the Truth and Reconciliation Commission (TRC) released its calls to action and specifically called for a national inquiry into murdered and missing Indigenous women and girls.

Ry Moran, the director of the National Centre for Truth and Reconciliation, criticized former Aboriginal affairs minister Bernard Valcourt. (Twitter/Canadian Geographic Society)

"There is a very troubling pattern of not listening to women when their needs are being expressed and when they are seeking justice for the very serious and terrible things that have been done to women over the years," said Moran.

"The harder we look at Canadian history, the bleaker it gets," said Moran.

Valcourt remained unrepentant for refusing to join the standing ovation in support of the TRC's call for an inquiry.

"When they called the inquiry and everyone stood up to applaud, what was I going to do, play the game? To be a hypocrite? I'm not," said Valcourt in the interview.

"I stand for what I believe and I did not believe that this was going to accomplish anything positive and I think I'm proven right."

Valcourt said the inquiry's report and his critics are playing "identity politics" and they have a right to their own opinion as he does to his.

"Identity politics is alive and well with the left and the ultra-left and this is something the government of Justin Trudeau is pursuing," he said.