read into it,..like google it or check wikipedia..

its not santa claus,.but sinterklaas (saint nickolaas)he was a bishop and in christian religion a holy person,.

his " teaboy" as the call the "slaves" here in arab country's.. was a Moor,.who he bougth free on the slave market,. out of gratetude "zwarte piet" stayed to help out sinterklaas (thats one side of the storey)

the other one is,. zwarte piet is a regular dutch boy,.who helps out sinterklaas drop the presents thru the chimney,.hence he is black because of the coildust

long horns and reindeer,.. never heard of those,. he rides a white merry horse wich wy dutch kids put a carrot in there shoes in front of the chimney