Here is a prominent Japanese American, George Takei, who was interned in the 40s, drawing from his experience to complain about contemporary US policy on behalf of other groups.
This is the whole mindset of people who want to maintain the status quo. "Just keep your mouth shut" is a mantra that only helps to maintain the oppression system.
I didn't read the comment that way. I read it as life sucks for a lot of people at times. Some dwell on it and never get past it. Others find a way to move forward, to make their own lives better instead of demanding that someone else do it.
That may be a good prescription for dealing with tragedies personally, but if everyone did that then those doing the abusing would never suffer any consequences, and society would never change.