First, Christians must have the cultural maturity to know that many of the most famous and influential producers of cultural materials, whether in literature, art, or entertainment, have been homosexuals. This does not mean that we cannot enjoy their music, art, or performances. Christians start from the presupposition that all humans are sinners, and that every artistic endeavor is marred by sin in both its conception and its demonstration.
Second, Christians must learn the discipline of cultural discernment based upon Christian truth. We must learn to engage the culture in a way that is both honest and missiological -- and we must work hard to develop a mind that brings all things under subjection to Christ, including our entertainment preferences and choices.
Third, we must avoid hypocrisy. We should not pick and choose recklessly as we condemn or praise without any obvious tie to biblical truth. We must not condemn publicly what we enjoy privately. We must not assert matters of taste as matters of principle.
Fourth, we must understand the nature of the art form and learn how to discriminate on the basis of an informed cultural understanding, not a knee-jerk reaction. Accordingly, we must understand that the very nature of acting, whether on stage or on screen, is based upon the ability of the actor to make the audience see the character portrayed, not the actor, in the performance.
His entire commentary is worth reading. I also appreciate his graciousness in including my blog as a recommended resource for further study. Thank you Dr. Mohler!