Sir, it is not prejudice to call sin, sin.  It is not bigotry to call sin, sin.  

It is decidedly unchristian to call sinful behavior not sinful.  It is decidedly unloving to allow someone who is in sin to think that they are not in sin.  Why?  Because our choices and actions matter on the day of judgement.  

I have no problem with tolerance. When liberals demand tolerance, that is reasonable.  When liberals demand acceptance, when they demand we change our belief systems, when they demand that we condone someone's choices and behavior, they demand what they have no right to demand.