I understand. It is unfortunate that Robertson (and Graham; and previously Falwell) is not successfully drowned out by the silent majority.
I think that's the major problem, the far right "christians" that use their supposed faith as an excuse for bigotry, disdain and oppression are loud, obnoxious, proud and yell and scream.
The actual sincere christians that take the gospel seriously tend to be more meek and humble, and tend not to be as loud or obnoxious. If you look at the polls you see that in the christian community the right wing is not the majority, many christians take social justice seriously, take "love your neighbor" seriously, many of them oppose war and so on, and many of them are simply not political, or simply don't engage in the wider social issues, but those ones don't yell and scream on TV.
You do have a few, Jim Wallis, Cornel West, Chris Hedges (who I think many people would question calling a christian, I'm not in that game, but even I would be a little uncomfortable calling him a christian, in this case me from a more conservative side, he's essencailly a deist that likes the philosophy of Jesus and the message of the prophetic tradition, yet doesn't believe in a personal God, or the ressurection.), and you then have the Occupy Priests and the buss Nuns, you have in the UK european christian socialist parties, which have historically been very strong (and which I would say the social-democracies in europe owe A LOT to, which some refuse to aknowladge) and which are different from the US where Christians either tend to be all left/liberal or all right/conservative, many tend to be more socially conservative yet economically leftist, which I would say is somewhat more consistant with a straightforward reading of the gospel and paul, in that line I have great respect for some in the UK CHristian peoples alliance, that campain hard on social justice issues that are not flashy or get headlines, but are really inline with the social gospel, such as housing for the poor, trying to allow more rights for immigrant families to stay together and not be split up (If American conservative christians cared about family values, the thing they would be fighting is deportation of undocumented immigrants that SPLIT UP FAMILIES, but they don't because that doesn't fulfill their hypocritical need to hate, and it would require actual compassion from them), stopping police discrimination in inner cities, and so on, but that doesn't get the headlines, neither do soup kitchens serving the homeless, neither do churches trying to get affordible housing ordinances done, neither do churches doing things to strengthen families, what gets the headlines is some asshole on TV saying outrageous stuff, and getting away with it because he has a cross in the background.
You also have many more christians, even hardline evangelical, that simply stay out of political discussions.
The point is dicks are loud and the meek are .... meek.