Just like in the Wikileaks threads when people go on about the abuses in other countries, and how unfair it is that JUST America's/ the DNC's/ the CIA/ the NAS's dirty laundry gets aired.
Repression and abuses of power should concern us all. One evil does not negate an other.
The other posts that refer the US are in response to comments stating/implying that it's a specifically Russian thing, pointing out that no, similar things occur in the US.
They're not trying to say one evil (Russian) is negated by another (American), but that both sides do evil.
If the US has even one instance of doing this, then questions arise such as:
1. Maybe this is unavoidable, and if so how much time/money should we spend chasing down an unavoidable issue?
2. Maybe there are specific circumstances where this is okay? Why isn't this one of those specific circumstances? We should trust the Russian government, just as American's give their own government the benefit of the doubt.