What is the chief cause of prejudice: Skin color or stupidity?

Stupidity is the chief cause.

Prejudice stems from the worst examples of the skin color! Example let's say you see on the news black ppl robbing raping and killing white people only. And the building you live in there are gangs of black men sitting there all day long just drinking smoking weed and talking smak. And how would you feel if you went to the welfare office and saw it filled with black people looking for the city to support them and not a JOB! how would this make you feel and think? Well?

usually it's they don't know much about the race they hate and they listen to lies about them rather than actually getting to know them. they hear stereotypes and assume the whole race that way which is not true. that's like if me being a black guy and saw white kkk members and assumed all whites hate blacks. then thought i should hate all white people. racism is stupidity and hopefully will go extinct soon.

It is their upbringing that may cause it. If the parents had prejudices, they can be passed down the their children.

Prejudice has to be taught. It’s not natural.

Stupidity of course. Nobody can control what skin color they have but if they wanted to, they could correct their own stupidity. 

Stupidity of these two.

Stupidity is the man cause of everything..

old age backward culture