Low IQs, ignorant tend toward jealousy.
There are other symptoms of stupid, besides.
Low IQ & Conservative Beliefs Linked to Prejudice
http://news.yahoo.com/low-iq-conservative-beliefs-linked-prejudice-180403506.html
"There's no gentle way to put it: People who give in to racism and prejudice may simply be dumb, according to a new study that is bound to stir public controversy...."
"If the statistics are right, the Jews constitute but one quarter of one percent of the human race.
It suggests a nebulous dim puff of stardust lost in the blaze of the Milky Way.
Properly, the Jew ought hardly to be heard of; but he is heard of, has always been heard of.
He is as prominent on the planet as any other people, and his importance is extravagantly out of proportion to the smallness of his bulk.
His contributions to the world's list of great names in literature, science, art, music, finance, medicine and abstruse learning are very out of proportion to the weakness of his numbers.
He has made a marvellous fight in this world in all ages; and has done it with his hands tied behind him.
He could be vain of himself and be excused for it.
The Egyptians, the Babylonians and the Persians rose, filled the planet with sound and splendour; then faded to dream-stuff and passed away: the Greeks and the Romans followed and made a vast noise, and they are gone; other peoples have sprung up and held their torch high for a time but it burned out, and they sit in twilight now, or have vanished.
The Jew saw them all, survived them all, and is now what he always was, exhibiting no decadence, no infirmities of age, no weakening of his parts, no slowing of his energies, and no dulling of his alert and aggressive mind.
All things are mortal but the Jew; all other forces pass, but he remains.
What is the secret of his immortality?"
(Mark Twain – Harper’s magazine - September 1887)