Sorry, have to disagree.  Louis Riel twice led a rebellion in Canada. He was involved in the Red River Rebellion in 1869, and fled to the U.S.  Then he was convinced to return to Canada by Gabriel Dumont and others.  He then led the rebellion in 1885 against Canada.  You don't have to like it, but Canada was in fact a country and in those days, it was treason to rebel against a properly constituted government. 

I don't think anyone is celebrating, but by the same token, you have to look at things in the historical context in which they took place.  The charge wasn't 
'trumped up', it was the law. 

Further, he wasn't a leader of the 'Indigenous people.' He was a leader of the Metis and championing their claims to land surveyed in the French fashion, that was overturned in Manitoba by the government's surveyors.  He also was involved in the death sentence of a captive from the Red River Rebellion, supporting his execution.  So, he wasn't quite the benign figure he is painted to be.