There is absolute truth. Almighty God knows what is truth, and he reveals it to men. Jesus says, You shall know the truth, and the truth will make you free.
Most people that propagate religion do not use violence and hatred. Every farmer that raises vegetables does not abuse the land. Should therefore all farmers be banned because some are irresponsible?
Churches, synagogues, mosques and temples all teach religion. Just close them all down, and burn every Bible and Quran, so that cowards can keep their faith (or lack thereof) only to themselves.