Re: should Christmas be celebrated by Muslims
Many westerners celebrate Christmas as a winter festival (as it originated). For some it is a totally secular holiday but filled with good stuff like peace, good will toward man, giving, sharing, remembering the less forturnate, food, music, decorations, etc, etc.
If it is not practiced as a religious festival, but for the reasons above, why would it be shirk? Skip the whole 'birth of Jesus' thing and just join the festivities. That's what a lot of westerners do.