In the Messianic Era, when the true Divine nature of every creature will be openly revealed, the pig will stand vindicated as a kosher animal. Because with all its posing and prancing, the pig does one thing for us. It forces us to confront our own insidious evil nature, combat it, and ultimately rise above it.   So the choice is ours. We can mask our deficiencies by verbally maligning the innocent pig, or we can recognize the pig for what it is: a mirror to our own animal selves. We must concentrate on perfecting and purifying our own animal souls, and G-d will reciprocate by "koshering" the pig. - The Rebbe    Based on Likkutei Sichos, Shabbos Parshat Shemini, vol. 17, pp. 92-99; Parshas Toldos, vol. 35 pp. 117-118 (reprinted from The Week in Review - as cited on moshiach.com).