If you will notice, everyone of those references was from the OLD Testiment. These laws were put in place by God because of man's sin, and because He had not sent The Ultiment
Sacrifice(to replace the scent of the burning sacrifices).
As for shrimp(and anything else "unclean") paul was told by God that it is ok to eat them, because he created them(though it is proven that those who eat according to that stated in Leviticus are healthier), and because Jesus had come with the new law to replace the old law. America has also changed it's laws as mentioned by someone else.
My dad(and I do too) also plants multiple crops in the same garden.
My mom wears mixed clothing.
I have touched dead pigs(not that it was all that fun).
I pray in His presence every day, and I have horrible eyesight. The
Sabbeth isn't difined as Sunday, just as a day of the week when no one works(and in America it happens to be Sunday) It depends on where you stand with God
Oh, I forgot, this was the Jewish law. We(or at least most of us) are Gentiles.