Is Ignorance Bliss?

After Prometheus' theft of the secret of fire, Zeus ordered Hephaestus to create the woman Pandora as part of the punishment for mankind. Pandora was given many seductive gifts from Aphrodite, Hermes, Hera, Charites, and Horae (according to Works and Days). For fear of additional reprisals, Prometheus warned his brother Epimetheus not to accept any gifts from Zeus, but Epimetheus did not listen, and married Pandora. Pandora had been given a large jar and instruction by Zeus to keep it closed, but she had also been given the gift of curiosity, and ultimately opened it. When she opened it, all of the evils, ills, diseases, and burdensome labor that mankind had not known previously, escaped from the jar, but it is said, that at the very bottom of her box, there lay hope.
There is no reason to think Pandora acted out of malice in opening the jar, for she was exercising her curiosity, and also when she saw what was let out of it, she quickly closed it.

One evil I would like to squelch is that of ignorance. Ignorance is something that is intertwined with most social evils: Phobias, hate, violence, segregation, disputes. From ignorance of a belief comes the notion that it is okay to act out against such ignorance which lends itself to the aforementioned evils. A world without ignorance would be one of complete societal acceptance and peace.