Acknowledging bias is worthwhile even if the conclusion might be the same.
[edit] Can't reply below: Freedom House is NOT the State Department. They're a funder, but not the only one. So your description still in incorrect or requires sourcing.
They're not masquerading in the sense that they try to hide where the money comes from, but to the majority that read their materials, this won't be apparent.
If they are a government organization then the domain needs to be .gov.
.org gives the perception of NGO.