Sorry...but I don't play "oppression Olympics" --you know, who or which group has been oppressed more/most by so-called white people.
The fact is that everywhere on this earth where Europeans have trod they have left exploitation, rape, robbery, slavery, genocide, and death in their wake.
But if you insist, no group has suffered more than the so-called American "Indian" under the oppressive gaze and impluse of Euro-Americans. This whole continent was ruthlessly, violently, deliberately stolen from them. Indeed, at one point during the 1980s there were only 250K "Indians" left on this North American continent (including Canada)-- a continent that had supported from 25-50 millions of them. They now amount to about 2 million.
So...again, your "suffering'" scale is simply not relevant to today's realities -- and disingenuous as well.