Why can't Muslims eat pig/Ham?

I THINK IT IS BECAUSE THEY ARE EVIL ISLAM IS FROM SATAN AND IF THEY EAT PIGS THEY ARE EATING ONE OF THEY OWN REMEMBER JESUS CAST OUT DEMONS AND SENT THEM INTO PIGS THEY THINK THEY WILL BE EAT IN ONE OF THEY OWN DEMONS FRIENDS

Two Demon-Possessed Men Healed

²⁸ When He had come to the other side, to the country of the Gergesenes,^[c] there met Him two demon-possessed men, coming out of the tombs, exceedingly fierce, so that no one could pass that way. ²⁹ And suddenly they cried out, saying, “What have we to do with You, Jesus, You Son of God? Have You come here to torment us before the time?”
³⁰ Now a good way off from them there was a herd of many swine feeding. ³¹ So the demons begged Him, saying, “If You cast us out, permit us to go away^[d] into the herd of swine.”
³² And He said to them, “Go.” So when they had come out, they went into the herd of swine. And suddenly the whole herd of swine ran violently down the steep place into the sea, and perished in the water.
³³ Then those who kept them fled; and they went away into the city and told everything, including what had happened to the demon-possessed men. ³⁴ And behold, the whole city came out to meet Jesus. And when they saw Him, they begged Him to depart from their region.

is it forbidden in islam to build a mosque on a ground where pigs were buried ?

Assalamu Alaikum Dear Brothers and Sisters,

recently i came across an article which stated some people in Switzerland had buried dead pigs and poured pigs’ blood on a land which a Masjidh was supposed to be built. The article, being an anti-Islamic one continued to say that it was a very clever move by those people since 'Muslims consider pig as a flighty animal and hence they are forbidden to build mosques where pig parts are found'.

what is the truth in this ? is it forbidden in islam to build a mosque on a ground where pigs were buried ?

wassalam
msms