No, the only people who do it and get away with it are the ones who are ultra liberal

You should not identify your agency in your profile. That includes putting your job description as something that can be easily identified as government work and something that the public could take as the opinion of the government. Otherwise, you have a 1st Amendment right to express political opinions.

If you're a gov't employee or contractor, do you post anything political on Facebook and Twitter? I'm not talking about "XXX is an idiot and so is anyone who voted for him" but general criticisms of parties, elections, etc.