[leereeves]

Do you believe that political manipulation by careful use of language exists?

That's a big difference between Zeus's wrath and Orwellian tactics. One is real.

Perhaps social science should be more aware, or more open about, the political influence of its chosen terms, if it wants to be a neutral search for truth.

But I admit, I may have misinterpreted your definitions. From your examples, I thought you meant that personal bias was about something of little social import, like blue vs green, while a bias regarding other people (even one held personally) was not a personal bias.