Because the calendar dictates, this time of year everyone is supposed to be a little more the way we ought to be all the time: cheerful, kind and considerate of others. I am thankful for the slight change of climate in our culture, for even though it is very temporary, it is a lean in the right direction. When Jesus sends His Spirit to live in His people, that Spirit teaches us to be like Jesus. And that is cheerful, kind and considerate of others. In fact we are told to consider others as more important than self. Our Savior actually taught us to love our enemies, and showed us he wasn't kidding when he prayed for his executioners, "Father, forgive them, for they know not what they do." Those who do not have the Spirit of God in them will always be temporary. But to the degree that they make an effort, they demonstrate that they know this (the Christian lifestyle) is how they should live.
The dramas I see on TV like to show the Bible believer as a dangerous mental case who is just as likely to be a terrorist or serial killer as any other psychopath. In a bid for political correctness, the Muslim is portrayed as misunderstood, while the Christian (if he is not portrayed as the bad guy) is portrayed as a strange aberration from the comfortable friends that usually surround us.
Then I remember that Jesus warned us that the world would hate us because it hates Him.