I loved seasons 1 and 2, but season 3 was loaded with political propaganda that ruined it for me. Regardless of one's politics, no one appreciates a political lecture. It's off-putting and inappropriate. When I flip on the TV at the end of a long day, I want to be entertained, not indoctrinated.
This show would be fun again if it lost the propaganda. Most of us viewers can think for ourselves; we don't need Hollywood to think for us.