My son died Nov. 19 2011 and we took him to our home country to bury him. One day I was sleeping and I saw his figure on the corner of the bed clapping. Next incident was with me walking into my bedroom and I saw his figure again clapping. What may this mean?

It might not MEAN anything. It is probably a spirit trying to get your attention. Tell it to leave... this is not your son, they are masters of imitation.

This answer sounds as a Christian biased for white or righteous religions are the ones condemning all spiritual activity as demonic and malevolent.

In a spiritual manifestation our six sense so to speak will use symbolism that will get your feelings moved to the nature of the spiritual entity. Fear, Sadness and anger are indicators of malevolent isolated consciousness either human or from the acausal.
It might not be your son, or it could be. A spiritual entity is a consciousness carried by a body of transcendent energy no longer trapped in the physical.
So reach out and see what it is or what it wants.

My answers having nothing to do with race/color... they have to do with what I have found to be true in the spiritual world.