Yes, we should be involved. We need to cast out vote most definitely. If we see our government going against God, we should be crying out against it (for example with the murder of unborn children). Should we complain about our government? That depends on the motive IMO. For me, when I see a government that is stripping our freedoms, eroding the Constitution, and bankrupting this country (both parties), then yes, I'm going to complain about it. I'm also going to pray about it and I also understand that God is in control. But if I can make any change through my talking about it, bringing it to peoples attention then I'm doing my civic and Christian duty. Does this mean I neglect the Gospel? No, that is my primary purpose and goal.