Why does freedom of speech has any importance here?

> We don't know what happens to the rest of the population, especially politically-involved people, and especially people who investigate on Hillary Clinton.

We do have a pretty good account of entire news and political organizations being extremely vocal about their opposition to one or more dominant political parties. Anyone can purchase a subscription to many magazines that take an overtly anti-government stance.

I find it strange that you point out Hillary Clinton as an "off limits" public figure; the amount of articles critical of her is in the tens of thousands. The initial email server scandal was broken by Gawker, and further investigated by reporters at the New York Times. Nearly every hour of Fox News I watched this year had something critical to say about Hillary Clinton. 60% of my Facebook feed is anti-Hillary posts. She is perhaps the safest public figure to criticize without expectation of negative consequences.