Christians have to do both politics and proselytizing. Or else we will get rolled over.
We cannot step aside and let the liberals write the laws. They will destroy traditional marriage. They will take away our free speech rights (like laws against quoting the Bible on gays). They will force doctors and pharmacists to aid and abet abortions, force gay and straight men to squish together in barracks, cram gay sex ed down the throats of our children in public schools, force semi-religious groups like the Boy Scouts to accept gays, force businesses to hire gays, and force EHarmony.com dating service to accept homosexuals (wait,they already did that in New Jersey!)
One CANNOT separate politics from religion, even if we want to. The anti-politics journalist Cal Thomas is a heroic Christian warrior. But he is totally deaf and blind on this issue.